Question

(x-5)(x-3)-(x+1)(x+2) при x=-2 10/11

Answer 1

(x-5)(x-3)-(x+1)(x+2)=$x^{2}$-5x-3x+15-($x^{2}$+2x+x+2)=$x^{2}$-8x+15-$x^{2}$-2x-x-2=-11x+13

Подставляем:

-11*(-2$frac{10}{11}$)+13=-11*(-$frac{32}{11}$)+13=32+13=45

Ответ: 45