1.

Find the value of x for given equation 3x2 + 5x - 2 = 01. -3 and -22. 3 and -1/23. 2 and -34. -2 and 1/3

Answer» Correct Answer - Option 4 : -2 and 1/3

Given:

3x2 + 5x - 2 = 0

Concept used:

Factorisation 

Calculation:

⇒ 3x2 + 5x - 2

⇒ 3x2 + 6x - x - 2

⇒ 3x(x + 2) -1(x + 2)

⇒ (3x - 1)(x + 2)

⇒ 3x - 1 = 0 so x = 1/3

⇒ x + 2 = 0 so x = -2

∴ x = -2 and 1/3



Discussion

No Comment Found

Related InterviewSolutions