Find the coordinates of the vertex of the quadratic function.f(x) = (x + 5)2 - 9
A. (5, 9)
B. (-5, 9)
C. (-5, -9)
D. (5, -9)
Answer: C
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Use the distributive property to rewrite the algebraic expression without parentheses. Then simplify the result, if possible.8(x + 9)
A. 8x + 72 B. x + 72 C. 8x + 9 D. 8x + 17