Question

Which of the following is not a quadratic polynomial
(A) X2+3x+4
(B) x2-3x+4
(C)6+(x2-4x)
(D) (x-3)(x+3)-(x2+7x)​

Answer 1

Step-by-step explanation:

The general form of quadratic polynomial is p(x) = ax^2 + bx + c where x is a variable and a,b,c are constants. The first term of this polynomial has .

Answer 2

Option D is correct.

Since,

(x-3)(x+3)-(x2+7x) = x2-9-x2-7x = -7x-9

which is linear equation.

• A quadratic equation is one in which the degree of polynomial is 2.
• Degree of polynomial is the highest power to which a variable is raised.