4x2z + 8xyz + 4y2z
= z(4x2 + 8xy + 4y2)
= \(z\left[\left(2x\right)^2+2.2x.2y+\left(2y\right)^2\right]\)
= z(2x + 2y)2
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4x2z + 8xyz + 4y2z
= z(4x2 + 8xy + 4y2)
= \(z\left[\left(2x\right)^2+2.2x.2y+\left(2y\right)^2\right]\)
= z(2x + 2y)2