Question

the value of the polynomial 5x-4x^2+3, when x = -1 is​

Answer 1

Hey friend your answer

5x-4x^2+3=5×(-1)-4×(-1)^2+3

=-5-4+3

=-9+3

=-6

Answer 2

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$x = - 1 \\ \\ p(x) = 5x - 4 {x}^{2} + 3 \\ \\ p(x) = - 4 {x}^{2} + 5x + 3 \\ \\ p( - 1) = - 4{( - 1)}^{2} + 5( - 1) + 3 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: = - 4 - 5 + 3 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: = - 9 + 3 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: = - 6$

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