(x-2y) whole square give me suitable answer
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9
(x-2y)whole square=x^2-2xy+y^2
=x^2-2×x×2y+2y^2
=x^2-4xy+4y^2.
=x^2-2×x×2y+2y^2
=x^2-4xy+4y^2.
Answered by
14
Hey there! ☺☻☺
![(x-2y)^2\\=(x)^2 + (2y)^2 - 2\times x \times 2y \ \ [(a-b)^2 =a^2 +b^2 - 2ab]\\=\boxed{\boxed{\bold{x^2 + 4y^2 - 4xy}}}](https://tex.z-dn.net/?f=%28x-2y%29%5E2%5C%5C%3D%28x%29%5E2+%2B+%282y%29%5E2+-+2%5Ctimes+x+%5Ctimes+2y+%5C+%5C+%5B%28a-b%29%5E2+%3Da%5E2+%2Bb%5E2+-+2ab%5D%5C%5C%3D%5Cboxed%7B%5Cboxed%7B%5Cbold%7Bx%5E2+%2B+4y%5E2+-+4xy%7D%7D%7D++ "(x-2y)^2\\=(x)^2 + (2y)^2 - 2\times x \times 2y \ \ [(a-b)^2 =a^2 +b^2 - 2ab]\\=\boxed{\boxed{\bold{x^2 + 4y^2 - 4xy}}}")
ⲂⲓⲧⲧⲉⲅⲤⲇⲛⲩ:
Thank you
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