Question

factorise
$4x {}^{2} + y {}^{2} + z {}^{2} - 4xy - 2yz + 4xz$
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Answer 1

hey mate here is your answer...

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

(2x)^2+(-y)^2+(z)^2+2*2x*-y+2*-y*z+2*2x*y

(2x-y+z)^2

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

hope it may help you...