Question

упростите выражение: (c+2)(c-3)-(c-1)в квадрате

Answer 1

(c+2)(c-3)-(c-1)^2

(c-1)^2 = c^2-2x+1

(c+2)(c-3) = c^2-3c+2c-6=c^2-c-6

(c+2)(c-3)-(c-1)^2 = c^2-c-6 - (c^2-2c+1) = c^2-c-6 - c^2+2c-1 = c-7

 

Ответ: с-7

Answer 2

(c+2)(c-3)-(c-1)²=c²-3c+2c-6-(c²-2c+1)=c²-3c+2c-6-c²+2c-1=c-7