[tex]4(2x-3y) =8x-12y\\\\-3(-x+y) = 3x-3y\\\\-(5x-y) = -5x+y\\\\(4x+2y) = 4x+2y = 2(2x+y)\\\\-3(-2x-y) = 6x+3y\\\\4(3x-2y) = 12x-8y\\\\-(-2x+y) = 2x-y\\\\(5x-2y) = 5x-2y[/tex]
Wyjaśnienie (znaki):
(+) · (+) = (+)
(-) · (-) = (+)
(+) · (-) = (-)
(-) · (+) = (-)
