Question 242965
{{{x^2 + (x-y)^2 = (x + y)^2}}}
{{{x^2 + x^2 - 2xy + y^2 = x^2 + 2xy + y^2}}}
{{{2x^2 - 4xy + y^2 = x^2 + y^2}}}
{{{x^2 - 4xy + y^2 = y^2}}}
{{{x^2 = 4xy}}}
{{{x = 4y}}}
{{{x/y = 4}}}
check nanswer:
{{{x^2 + (x-y)^2 = (x + y)^2}}}
{{{(4y)^2 + (4y-y)^2 = (4y + y)^2}}}
{{{ 16y^2 + 9y^2 = 25y^2}}}
{{{25y^2 = 25y^2}}}
OK