Question

find the value of the polynomial f=4x+2x²-5at x=2​

Answer 1

Answer:

Correct option is 8

Given polynomial is p(x)=4x

2

−3x+7

We need to find value of polynomial at x=1.

Then put the value of x=1 in the given polynomial, we get

p(x)=4(1)

2

−3(1)+7

⇒p(x)=4×1−3×1+7

⇒p(x)=4−3+7

⇒p(x)=11−3=8

So, value of polynomial is 8.

Step-by-step explanation:

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Answer 2

Answer:

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Step-by-step explanation:

Given :-

f(x) = 2x²+4x-5

Find :-

The value of the polynomial at x = 2

Solution :-

f(x) = 2x²+4x-5

=> f(2) = 2(2)²+4(2)-5

=> f(2) = 2(4)+8-5

=> f(2) = 8+8-5

=> f(2) = 11

Conclusion :-

Therefore the value of the polynomial f(x) =2x²+4x -5 at x=2 is 11