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## 5. How do you read the notation:A == {x|x is

**Ask: **5. How do you read the notation:

A == {x|x is a

**Step-by-step explanation:**

x ≈ y means x is approximately equal to y. This may also be written ≃, ≅, ~, ♎︎ (Libra Symbol), or ≒. π ≈ 3.14159. isomorphism.

**Answer: x ≈ y means x is approximately equal to y. This may also be written ≃, ≅, ~, ♎︎ (Libra Symbol), or ≒. π ≈ 3.14159. isomorphism.**

**Step-by-step explanation:**

## How to Read this “ x^a x^b = x^a+b “

**Ask: **How to Read this “ x^a x^b = x^a+b “

X TO THE POWER A TIMES X TO THE POWER B EQUAL X TO THE POWER A PLUS B

## how to read this x⁵ ?

**Ask: **how to read this x⁵ ?

**Answer:**

X raise to 5 or x raise to the fifth power

## 10x (x + 1) how to read?

**Ask: **10x (x + 1) how to read?

**Answer:**

ten x times x plus one

## how we can read this (20+x)(20-x)

**Ask: **how we can read this (20+x)(20-x)

**Answer:**

20+×)20-×)=900

hope it’s HELPS

[tex]hugepink{overbrace{underbrace{tt purple{↬Answer }}}}[/tex]

**how we can read this (20+x)(20-x)**

- Quantity 20 plus x and quantity 20 – x

Hope it helps

⚘ᵈᵒᵏⁱ ᵈᵒᵏⁱ ˡⁱᵗᵉʳᵃᵗᵘʳᵉ ᶜˡᵘᵇ ˢᵠᵘᵃᵈ⚘

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## how to read {xe R/ X≤ o or x ≥

**Ask: **how to read {xe R/ X≤ o or x ≥ 1)

**Answer:**

we read it as {xe R/ X≤ o or x ≥ 1)

**Step-by-step explanation:**

1 x

2 e

3 R

4 /

5 X

6 ≤

7 o

8 or

9 x

10 ≥

11 1

## How do you read this notation "{x | x is

**Ask: **How do you read this notation “{x | x is …}”?

**Answer:**

The set of all x’s, such as x is…

## how to read algebra √x-3y

**Ask: **how to read algebra √x-3y

**Answer:**

Variables

A variable is a letter that is used to represent a number. For instance, in this problem the variable x represents an unknown number that will equal 5 when added to 2.

2 + x = 5

In other words, this expression is asking the question, “What number can you add to 2 to get 5?” We wrote x because we didn’t know what the number was at first—but we can figure it out. Since we know that 2 + 3 = 5, our variable must be equal to 3. In other words, x = 3.

Although this was a simple addition problem, the fact that it included a variable made it an algebra problem. In fact, finding the value of an unknown number is often the goal in algebra.

While x is the most commonly used variable, any letter can be a variable. An algebra problem can have one variable or many. If a variable is used more than once in the same problem, it’s equal to the same number each time. Take this equation:

x + x + y = 20

Each x in this expression is equal to the same amount. The other variable, y, may be equal to a different amount.

Just because you find the value for a variable in one problem doesn’t mean the variable will have the same value in a different problem. For instance, while x was equal to 3 in our first problem, it isn’t necessarily equal to 3 in any other expression.

Coefficients

Sometimes you’ll see a variable with another number in front of it, like this:

2x

In this example, 2 is the coefficient. Coefficients are a way to group variables. For example, 2x is just another way to write x + x. Could you use coefficients to rewrite this expression?

x + x + x + x + y + y + y

Because there are four xs and three ys, you could write this as 4x + 3y. Without knowing what x and y are equal to, we can’t simplify it even further—but it is a lot simpler to read:

4x + 3y

You may be wondering why we can’t simplify this even further to 7xy. This is because you can only add or subtract variables that are the same—so you can add x + x or y + y but never x + y. For more information about adding and subtracting variables, check out our Simplifying Expressions lesson.

Operators

Operators are the symbols that tell us what to do in math problems. You’ve seen them all before:

+ – ÷ x

These symbols let you know how to calculate an expression—for instance, when you see the plus sign you know to add two numbers, and when you see the minus sign you know to subtract. The plus and minus signs are the same in algebra, but multiplication and division might be written a bit differently.

Multiplication

In arithmetic, multiplication is usually written as like this:

2 x 6

However, in algebra the multiplication symbol is written a bit differently. This is because x looks similar to the variable x. For this reason, many people use this dot symbol to show multiplication: ⋅ (which is what you’ll see in our lessons). In algebra, a multiplication problem is written like this:

2 ⋅ 6

There are a few other ways to show multiplication in algebra. As you saw when we multiplied coefficients, you can simply write variables next to each other to multiply them. If you wanted to multiply x and y, you could simply write xy.

xy

Division

There are a few ways to show division in algebra. You’re probably most familiar with division problems that look like this:

4 ÷ 2

You will see division written this way in algebra. However, you’ll also see it written like this (especially in our lessons):

4 / 2

If you’re dividing groups of numbers, you can also show division with a horizontal line. For example, look at this problem:

3x – 12y + 18

3

Here, everything above the line is divided by everything below it, so you’d divide 3x – 12y + 18 by 3.

Other parts of algebraic expressions

**Step-by-step explanation: **

## how to read {x │ x ∈ Z and –

**Ask: **how to read {x │ x ∈ Z and – 2 < x ≤ 3 } ?

Answer:i tagalog mo par

Step-by-step explanation:kase kailangan mo itagalog

## how to read it y= {x/x∈R}

**Ask: **how to read it y= {x/x∈R}

**Answer:**

y is equal to x such that x is an element of real number

**Step-by-step explanation:**

- / is read as “such that”
- ∈ is read as “an element of”
- R = real numbers; Q = rational numbers; Z = integers; N = natural numbers; W = whole numbers

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