Question

Expand (xy-2z)²
I request you to write the answer

Answer 1

Step-by-step explanation:

it is in the form of (a-b)²

= (xy-2z)² =(xy)² -2*xy*2z + (2z)²

= x²y² -4xyz + 4z²

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Answer 2

Answer:

x²y²+4z²-4xyz

Step-by-step explanation:

(xy-2z)²

$(x - y) = x {}^{2} + y {}^{2} - 2xy$

so,

(xy-2z)²=(xy)²+(2z)²-2(xy)(2z)

=x²y²+4z²-4xyz