Question

$left { {{x-y=4} atop { x^{2}- y^{2} =40}} right.$ помогите решить систему уравнений

Answer 1

$left { {{x-y=4} atop {x^2-y^2=40}} right. \ \ left { {{x-y=4} atop {(x-y)(x+y)=40}} right. \ \ left { {{x-y=4} atop {x+y=10}} right.\ x-y=4\ x+y=10\ x=7\ y=3$