9y**2-25yz-6z**2
Multiply first and last terms
9*-6=-54
Find factors of -54
2,-27 = 2+-27=-25
-2,27 = -2+27=25
Rewrite
9y**2-27zy+2zy-6z**2
Factor pairs of terms
9y**2-27zy = 9y(y-3z)
2zy-6z**2= 2z(y-3z)
9y**2-27zy+2zy-6z**2= 9y(y-3z)+2z(y-3z)
Factor:
9y(y-3z)+2z(y-3z) = (y-3z)(9y+2z)
18z6
9y2
5(x+5yz)
We are missing an important sign (+/-) I shall assume 9x2 - 18xy + 9y2 9(x-y)(x-y)
24z+4 or 6(4z+1)
(9y+2z)(y-3z)
6xy+9y2
(y-3 z) (9 y+2 z)
If you mean: (3y)2 then it is 9y2
(x + 3y)(x2 - 3xy + 9y2)
(4x + 3y)(4x + 3y) or (4x + 3y)2
x3+27y3 = (x+3y) · (x2-3xy+9y2)