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06-02-2019
Mathematics

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math help please i will mark brainliest!!!!!

math help please i will mark brainliest class=

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Аноним Аноним

06-02-2019

Answer:

The second choice is the correct one.

Step-by-step explanation:

20x^4 - 45x^2

GCF is 5x^2, so the factors are:

5x^2( 4x^2 - 9)

Now 4x^2 - 9 is the differencr of 2 squares:

4x^2 - 9 = (2x + 3)(2x - 3)>

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