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5 votes
Factor this expression 9x^2 - 18x


factor this expression 4x^2 - 9

User Jimadine
by
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1 Answer

5 votes

Answer:

9 x (x - 2) and (2 x - 3) (2 x + 3)

Explanation:

Factor the following:

9 x^2 - 18 x

Factor 9 x out of 9 x^2 - 18 x:

Answer: 9 x (x - 2)

Factor the following:

4 x^2 - 9

4 x^2 - 9 = (2 x)^2 - 3^2:

(2 x)^2 - 3^2

Factor the difference of two squares. (2 x)^2 - 3^2 = (2 x - 3) (2 x + 3):

Answer: (2 x - 3) (2 x + 3)

User Steven Martin
by
8.4k points

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