Question

Разложите на множители : 1. y^2-y+2y-2 2. x^2-25y^2 3. ab^2-2ab+a

Answer 1

y(y+2)-1(y+2)= (y+2)(y-1)

(x-5y)(x+5y)

a(b²-2b+1)= a(b-1)²= a(b-1)(b-1)

Answer 2

1. (y^2-y)+(2y-2)
y(y-1)+2(y-1)
(y-1)(y+2)
2. (x-5y)(x+5y)
3. a(b^2-2b+1)
a(b-1)^2