Question

X square + 4 y square minus z square - 4 x y

Answer 1

x^2 + 4y^2 - z^2 - 4xy

= ( x^2 + 4y^2 - 4xy) - (z)^2

= ( x - 2y)^2 - (z)^2

= ( x - 2y - z) (x - 2y + z)

Answer 2

Your answer !!

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${x}^{2} + {4y}^{2} - {z}^{2} - 4xy \\ \\ ( {x}^{2} + {4y}^{2} - 4xy ) - {z}^{2} \\ \\ {x - 2y}^{2} - {z}^{2} \\ \\ (x - 2y - z) (x - 2y + z)$
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