hey could you expand the following and give me the answer
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the answer is given in the attachment above
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Answer:
(2x-3y-z)²
=> (2x)²+(3y)²+(z)²+2{(2x)(-3y)+(-3y)(-z)+(2x)(-z)}
=> 4x²+9y²+z²+2{(-6xy)+(3yz)+(-2xz)}
=> 4x²+9y²+z²-2(6xy-3yz+2xz)
=> 4x²+9y²+z²-12xy+6yz-4xz
Hope it helps :)
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