Question

pf me ajudem nesta questão

Answer 1

x-y=15
x . y=100

x=15-y

(15-y) . y=100
15y-y*=100
15y-y*-100=0
y*-15y-100=0
(y-5) . (y-20)
y-5=0 y-20=0
y=5 y=20

20-5=15
20 . 5=100
20*+5*=425

*=ao quadrado