Question

(x+b)²-(x-a)²-(a+b)²=0

Answer 1

x^2 + 2xb +b^2 - (x^2-2ax + a^2) -(a^2-2ab+b^2) = 0
x^2 + 2xb + b^2 -x^2 -2ax + a^2 -a^2+2ab -b^2 =0
2xb-2ax+2ab =0
2x(b-a)+2ab =0
x=-2ab/2(b-a)

Answer 2

x²+2xb+b²-(x²+2ba-a²)-(a²+2ab+b²)
x²+2xb+b²-x²-2ba+a²-a²-2ab-b²

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