If Q(x) = 4x^2 + 5x -7, find Q(-1)
2 answers:
Answer: -8
<u>Step-by-step explanation:</u>
Q(x) = 4x² + 5x - 7
Q(-1) = 4(-1)² + 5(-1) - 7
= 4(1) + -5 -7
= 4 - 5 -7
= -8
<h3>
Answer: -8</h3>
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Work Shown:
Q(x) = 4x^2 + 5x - 7
Q(-1) = 4(-1)^2 + 5(-1) - 7 .... replace every x with -1; use PEMDAS
Q(-1) = 4(1) + 5(-1) - 7
Q(-1) = 4 - 5 - 7
Q(-1) = -1 - 7
Q(-1) = -8
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