9x squared - 6x - 6x + 4
9x squared - 12x + 4
3x - y - 3z
(3*-2) - 1 - (3*-2)
-6 - 1 - (-6)
-7 + 6
-1
The answer is 1.
Side 5 and x^2+4x are the same length, so you can plug in the answer choices until the equation equals 5.
Answer:
see explanation
Step-by-step explanation:
a² - b² ← is a difference of squares and factors as
= (a - b)(a + b)
Given
9x² - 16 ← a difference of squares
= (3x)² - 4² → with a = 3x and b = 4
= (3x - 4)(3x + 4)