1.

Solve the following equation for X: 4x2 +4bx- (a2 -b2)=0

Answer»

4x² +4bx -(a² -b²) = 0

4x² +4bx -a² + b² =0

(2x)² + 2.(2x).b + b² -a² =0

(2x + b)² -a² = 0

use formula,

a²-b² = (a -b)(a + b)

{2x + b -a}{2x + b +a} =0

Therefore, x = (a - b)/2 , - (a + b)/2


Discussion

No Comment Found

Related InterviewSolutions