Question 344438
x²+(x+2)²=(x+4)² 
x²+x²+2x+2x+4 = x²+4x+4x+16  It's ok this far
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x(4)+4+4 = x²+8x+16  ????
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{{{2x^2 + 4x + 4 = x^2 + 8x + 16}}}
{{{x^2 - 4x - 12 = 0}}}
(x-6)(x+2) = 0
x = -2 (Ignore)
x = 6