Question

Помогите пожалуйста чем сможите

Answer 1

3) ax+3ay+5x+15y = x(a+5)+3y(a+5)= (a+5)(x+3y)

x^5+2x⁴-x-2 = x(x⁴-1)+2(x⁴-1)= (x⁴-1)(x+2)

ab-ac-a²+bc = b(a+c)-a(c+a) = (a+c)(b-a

4) (1-х)(2-х) = (х+3)(х-4)

2-х-2х+х²= х² - 4х+3х-12

-х-2х+х²-х²+4х-3х= -2-12

-2х=-14

х = 7

Answer 2

1. a) (4x-3)(8x+6) = 32x²+24x-24x-18=32x²-18=18*(2x²-1);

b) 2y(y²-1)(2+y) = 2y(y-1)(y+1)(2+y) = 2y²-2y+2y²+2y+4y+2y²=6y²+4y = 2y(3y+2)

2. a) ax + 3ay + 5x + 15y = a(x+3y) + 5(x+3y) = (a+5)(x+3y)

b) —

c) ab - ac - a² + bc = c(b-a) + a(b-a) = (c + a)(b-a)

3. a) 4y³- (1+2y)(2y²-y) = 4y³-2y²+y-4y³+2y²=y

y=1/9