Question

Which one is the factor of 2x² − 7x + 3?

पर्याय

• x − 3

• x + 3

• 2x + 3

• 2x − 3

Answer 1

x − 3

Explanation:

Let f(x) = 2x² − 7x + 3

Let x − 3 = 0

x = 3

f(3) = 2(3)² − 7(3) + 3

= 2(9) − 7(3) + 3

= 18 − 21 + 3

= −3 + 3

= 0

∴ x − 3 is a factor of f(x).