(2x-4y-1)² expand the following
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Answered by
8
Answer:
Step-by-step explanation:
(x+y+z)2=x^2+z^2+y^2+2xy+2yz+2zx
(2x)^2+(-4y)^2+(-1)^2+2*2x*-4y+2*-4y*-1+2*-1*2x
=4x^2+16y^2+1-16xy+8y-4x
Answered by
1
Answer:
Step-by-step explanation:
(x+y+z)2=x^2+z^2+y^2+2xy+2yz+2zx
(2x)^2+(-4y)^2+(-1)^2+2*2x*-4y+2*-4y*-1+2*-1*2x
=4x^2+16y^2+1-16xy+8y-4x
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