1) y²+3y-4y-12+y²+2y+1-49+y²= 3y²+y-60
2) 7ab(3a+4b)
(6m-10√n)*(6m+10√n)
(5+ab)(25-5ab+a²b²)
5x(x²-y²)= 5x(x-y)(x+y)
1) y²+3y-4y-12+y²+2y+1-49+y²= 3y²+y-60
2) 7ab(3a+4b)
(6m-10√n)*(6m+10√n)
(5+ab)(25-5ab+a²b²)
5x(x²-y²)= 5x(x-y)(x+y)
3y^2+9y-36
a) 7ab(3a+4b)
b) 4(9m^2-25n)
в) (5+ab)(25-5ab+a^2b^2)
г) 5x(x^2-y^2)