2 years ago

Which binomial is a factor of 9x2 – 64?

1 answer:

4 0

This is a differnce of 2 perfect squares
a²-b²=(a-b)(a+b)
so
9x²-64=(3x)²-(8)²=(3x-8)(3x+8)
factors are (3x-8) and (3x+8)

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