Question

Hypotenuse=20, find other sides if they differ by 4.

Answer 1

$let \: base \: = x$
$perpendicular = x - 4$
$x {}^{2} + (x - 4) {}^{2} = 20 {}^{2}$
$x { }^{2} + x {}^{2} + 16 - 8x = 400$
$2x {}^{2} - 8x - 184$

Answer 2

It's value is write according to question but not a correct way