Answer:
=7x^2−28
Explanation:
Let's simplify step-by-step.
7(x−2)2+28(x−2)
Distribute:
=7x2+−28x+28+(28)(x)+(28)(−2)
=7x2+−28x+28+28x+−56
Combine Like Terms:
=(7x2)+(−28x+28x)+(28+−56)
=7x2+−28
7(x-2)(x+2)
7( x - 2 )² + 28 ( x - 2 )
7(x² -4x + 4) +28x -56
7x²-28x+28+28x-56
7x²-28
7(x²-4)
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