Simplify 2x^2 - 5x - 3 - 4x^2 + 5 and find value when x = -1
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Answer:
p(x) = 2x² - 5x - 3 - 4x² + 5
p(-1) = 2(-1)²-5(-1)-3-4(-1)²+5
= 2 + 5 - 3 - 4 + 5
= 12 - 7
= 5
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