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mario62 [17]
3 years ago
5

Select all the factors of: 7x2 − 28 options: 7 7x (x + 2) (x − 2) (x2 + 4)

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
8 0

Answer:

7(x-2)(x+2)

Step-by-step explanation:

7x^2 -28

Factor out a 7

7(x^2 -4)

The terms inside the parentheses is the difference of squares, so it is factorable  (a^2-b^2) = (a-b)(a+b)

7(x-2)(x+2)

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Factor:<br> 4b2 - 12b + 9
Vikentia [17]

Answer:

  (2b-3)²

Step-by-step explanation:

The square of a binomial is ...

  (p - q)² = p² - 2pq + q²

The fact that the first and last terms are perfect squares suggests that you might want to look to see if the middle term matches this form. It does.

For p² = 4b², p=2b.

For q² = 9, q = 3.

Then 2pq = 2(2b)(3) = 12b.

So, the factoring is ...

  4b² -12b +9 = (2b -3)²

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3 years ago
Which phrase correctly represents the algebraic expression for 22-n?
Harrizon [31]

Answer:

D

Step-by-step explanation:

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3 years ago
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Whitepunk [10]

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3 * 125

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3 0
3 years ago
What is a quotient of a number and 15?
Alenkinab [10]

Answer:450 i think


Step-by-step explanation:

Quotient' means you will divide the numbers.

Also, to be 'no greater' means to be 'less than or equal to'.

6 0
2 years ago
The volume of a rectangular prism can be represented by the expression 216x^3y^2. If the length is 8 y and the width is 9 x , wh
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Answer:

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