Question

Realice los siguientes cubo perfecto ( y-2) al cubo

Answer 1

(y-2)

(y-2)2= y2-4x+4

(y-2)(y2-4x+4)=  y4-4xy+4y-2y2-8x-8

Answer 2

$(y - {2)}^{3} = \\ ( y - 2)(y - 2)(y - 2) = \\ ( {y}^{2} - 2 \times 2y + 4)(y - 2) = \\ ( {y}^{3} - 2y(2y) + 4y - {2y}^{2} - 2( - 2 \times 2y) - 8) )= \\ {y}^{3} - 4 {y}^{2} + 4y - {2y}^{2} + 8y - 8 = \\ {y}^{3} - 6 {y}^{2} + 12y - 8$