Question

Упростите выражение
2.37аб

Answer 1

(c-d)^2+(c+d)^2/2d(c^2-d^2) = c^2-2cd+d^2+c^2+2cd+d^2/2d(c^2-d^2) = 2с^2+2d^2/2d(c^2-d^2) = 2(c^2+d^2)/2d(c^2-d^2) = c^2+d^2/d(c^2-d^2)
^2-квадрат
/-знак деления

Answer 2

x2-16y2-x2+y2/5y(x+y)(x-4y) = 15y2/5y(x+y)(x-4y) = 3y/(x+y)(x-4y) x2;y2-квадрат