Question

The value of the quadratic polynomial q(x)= 3x^2 + 7x + 4 at x = -2 is
2
1
0
-2

Answer 1

Answer:

2

Note:

★ If the expression any polynomial p(x) is given , then to find the value of polynomial at x = a (ie , to find p(a) ) , we need to put x = a everywhere in the expression of the polynomial p(x) .

Solution:

Here,

The given quadratic polynomial is ;

q(x) = 3x² + 7x + 4

We need to find the value of the quadratic polynomial at x = (-2) .

Thus,

Let's put x = -2 everywhere in the expression of q(x) .

Thus,

=> q(x) = 3x² + 7x + 4

=> q(-2) = 3(-2)² + 7(-2) + 4

=> q(-2) = 12 - 14 + 4

=> q(-2) = 2

Hence,

The required answer is 2 .

Answer 2

Answer:

2

Step-by-step explanation: