Question

1)y²-6y-7
2)y²+7y+10
3)2y²-y-6
4)3y²+10y-8
5)6y²+7y-3
6)4y²+28+49
срочно плиз ​

Answer 1

1)y²-6y-7=y²+y-7y-7=y(y+1)-7(y+1)=(y+1)(y-7)

2)y²+7y+10=y²+5y+2y+10=y(y+5)+2(y+5)=(y+5)(y+2)

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

4)3y²+10y-8=3y²+12y-2y-8=3y(y+4)-2(y+4)=(y+4)(3y-2)

5)6y²+7y-3=6y²+9y-2y-3=3y(2y+3)-(2y+3)=(2y+3)(3y-1)

6)4y²+28+49=4y²+77