If the missing sign is minus then you have the difference of two squares so: (2x + 3y)(2x - 3y)
Oh, what a happy little question! When we see 3y to the 2nd power, it means we are multiplying 3 by y two times. So the answer is 3y * y, which simplifies to 3y^2. Just imagine those y's dancing together on the canvas of mathematics!
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)
(x + 3y)(x2 - 3xy + 9y2)
(4x + 3y)(4x + 3y) or (4x + 3y)2
x3+27y3 = (x+3y) · (x2-3xy+9y2)
4x2-8x-9y2+54x=113(4x2-8x ) + (-9y2+54y ) =1134(x2-2x+1) -9(y2-6y+9) =113+4-81 because of distribution4(x-1)2 - 9(y-3)2 = 36Divide by 36(x-1)2 - (y-3)2 =19 4