Question

(x-2y)² – (2x + y)²​

Answer 1

Step-by-step explanation:

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

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

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

= -3x^2 +3y^2

=3(y^2-x^2)

Answer 2

Step-by-step explanation:

x^2 -4yx+4y^2 -( 4x^2+ y^2 +4xy)

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

-3x^2-8xy+3y^2........is your answer ( after cancellation

)

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