Question

If x - 1 is a factor of the polynomial `3x^2 + mx `  then find the value of m. 

पर्याय

• 2

• -2

• -3

• 3

Answer 1

-3

Explanation:

Let p(x) = 3x² + mx.

(x − 1) is a factor of p(x).

∴ p(1) = 0

⇒ 3 × (1)² + m × 1 = 0

⇒ 3 + m = 0

⇒ m = −3