Question

the value of f(x)=5x-4x^2+3,when x=-2 is a)23 b)-23 c)9​

Answer 1

Step-by-step explanation:

Given that: a polynomial as

P(x)=5x−4x

2

+3

To find value of polynomail at x=−1 or P(−1)

So we put x=−1 in polynomial,

P(−1)=5×(−1)−4×(−1)

2

+3

P(−1)=−5−4+3

P(−1)=−6

So value of polynomial at x=−1 is −6.

HOPE IT IS HELP YOU

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Answer 2

f(X)=5x-4x^2+3

then X=-2

f(-2)=5(-2)-4(-2)^2+3

=-10-4(-4)+3

=9

C is a answer