Question

the value of the polynomial p(X)=3X3-4X+√11 at x=2

Answer 1

Answer:

Let p(x)=3x

2

−4x

2

+7x−5 is our polynomial.

∴p(3)=3(3)

3

−4(3)

2

+7(3)−5

=3(27)−4(9)+21−5

=81−36+21−5

=61

Now,

p(−3)=3(−3)

3

−4(−3)

2

+7(−3)−5

=3(−27)−4(9)−21−5

=−81−36−21−5

=−143

So, value of polynomial when X=3 is 61 and when x=−3 is −143

Step-by-step explanation:

Correct option is C)

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.