Question

36a^2 - 9 factor the polynomial

Answer 1

Have you heard of the difference of two squares?

Answer 2

Use the idea that x^2 - y^2 = (x-y)(x+y)

Answer 3

The difference of two squares factors as follows:
x^2 - y^2 = (x + y)(x - y)
36a^2 is the square of 6a
9 is the square of 3
In your case, x = 6a, and y = 3

Answer 4

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