Question

find the value of polynomial - 4x2+7x-5 when x=-3
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Answer 1

Answer:

$- {4x}^{2} + 7x - 5$

$x = -3$

$( - 4 \times {-3}^{2} ) + (7 \times 3) - 5$

$- 36 + 21 - 5$

$21 - 41$

$- 20$

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