# The value of the polynomial 5x-4x^{2}+3, when x=-1

The value of the polynomial $5x-4{x}^{2}+3$, when x=-1
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Mary Herrera
Step 1
Given polynomial,
$p\left(x\right)=5x-4{x}^{2}+3$
Step 2
Put x=-1
$p\left(-1\right)=5×\left(-1\right)-4×{\left(-1\right)}^{2}+3$
=-5-4+3
=-6
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reinosodairyshm
Step 1
Given
$5x-4{x}^{2}+3$
at
x=-1
Step 2 Finding the value of the polynomial
Put
x=-1
$f\left(-1\right)=5\left(-1\right)-4{\left(-1\right)}^{2}+3$
f(-1)=-5-4+3
=-6
$\therefore$ The value of the polynomial
$5x-4{x}^{2}+3$ at x=2 is -3 and at x=-1 is -6