Question

25x²+16y²+4z²-40xy+16yz-20zx

Answer 1

Answer:

25x^2+16y^2+4z^2-40xy+16yz-20zx

=(-5x)^2+(4y)^2+(2z)^2+2.(-5x).4y+2.4y.2z+2.2z.(-5x)

={(-5x)+4y+2z}^2

=(-5x+4y+2z)(-5x+4y+2z)

Step-by-step explanation:

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