Question

Упростите выражение(5-y)^2-(5+y)^2

Answer 1

. 25-10*y+y^2-(5+y)^2 . 25-10*y+y^2-(25+10*y+y^2) . 25-10*y+y^2-25-10*y-y^2 . -10*y+y^2-10*y-y^2 . -20*y+y^2-y^2 . -20*y