Question

the question is in the given picture

Answer 1

the value of x for above equation is 2

Answer 2

x^2 -4ax +4a^2 - b^2 = 0
= x^2 -2.2a.x +(2a)^2 -b^2 =0
= (x-2a)^2 - b^2 = 0
= (x-2a+b)(x-2a-b) = 0
Hence, x= 2a-b
or. x=2a +b