Question

решите систему уравнений,ПОЖАЛУЙСТА !!!
ДАЮ 25 БАЛЛОВ.​

Answer 1

$\displaystyle \left \{ {{(4x+5)^2-(4x+11)^2=12y} \atop {(y-7)^2-(y+3)^2=40x}} \right.\\ \\\left \{ {{-48x-12y=96} \atop {-40x-20y=-40}} \right.\\ \\\left \{ {{240x+60y=-480} \atop {-240x-120y=-240}} \right. \\\\-60y=-720\\y=12\\-40x-20*12=-40\\x=-5\\(x,y)=(-5,12)$

Answer 2

Решение во вложении: