Question

(x-3)²-(x-1)(x-4)+(-2)(x+2)​

Answer 1

(x-3)²-(x-1)(x-4)+(-2)(x+2)

х²-6х+9-(х-1)×(х-4)+(-2)×(х+2)

х²-6х+9-(х²-4х-х+4)+(-2)×(х+2)

х²-6х+9-(х²-4х-х+4)-2(х+2)

х²-6х+9-(х²-5х+4)-2(х+2)

х²-6х+9-(х²-5х+4)-2х-4

х²-6х+9-х²+5х-4-2х-4

-6х+9+5х-4-2х-4

-3х+9-4-4

-3х+1

Ответ: -3х+1