Highly selective Backlog Qs for JEE MainMathematicsQuadratic Equation
If 4 x - 3 x - 1 2 = 3 x + 1 2   - 2 2 x - 1 then value of x is equal to
Options
- A5 2
- B2
- C3 2
- D1
Correct answer
C. 3 2
Step-by-step solution
4 x - 3 x - 1 2 = 3 x + 1 2 - 2 2 x - 1 4 x + 2 2 x - 1 = 3 x + 1 2 + 3 x - 1 2 4 x + 4 x 2 = 3 x 3 + 3 x 3 ⇒ 4 x 1 + 1 2 = 3 x 3 + 1 3 ⇒ 4 3 x = 2 3 × 4 3 = 8 3 3 = 2 3 1 2 3 = 4 3 3 2 ⇒ x = 3 2