Which of the following is not a quadratic polynomial? A) (x – 2) (x

1.	Which of the following is not a quadratic polynomial? A) (x – 2) (x + 2) – (x2 + 5x) B) 1 – (x2 – 2x) C) x2 – 5x – 6 D) x2 + 5x + 6
Answer» Correct option is (A) (x – 2) (x + 2) – (x² + 5x) \((x – 2) (x + 2) – (x^2 + 5x)\) \(=x^2-4-x^2-5x\) = -4 - 5x which is a linear polynomial not a quadratic polynomial. Correct option is A) (x – 2) (x + 2) – (x² + 5x)

Which of the following is not a quadratic polynomial? A) (x – 2) (x + 2) – (x2 + 5x) B) 1 – (x2 – 2x) C) x2 – 5x – 6 D) x2 + 5x + 6

Answer»

Correct option is (A) (x – 2) (x + 2) – (x² + 5x)

\((x – 2) (x + 2) – (x^2 + 5x)\)

\(=x^2-4-x^2-5x\)

= -4 - 5x which is a linear polynomial not a quadratic polynomial.

Correct option is A) (x – 2) (x + 2) – (x² + 5x)