Expand the following using suitable identity.
(-x+3y+3z)²
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Step-by-step explanation:
Answer. By (a+b+c) ^2=a^2+b^2+c^2+2ab+2bc+2ac, (-2x+3y+2z) ^2=(-2x) ^2+(3y) ^2+(2z) ^2+2(-2x) (3y) +2(3y) (2z) +2(-2x) (2z) =4x^2+9y^2+4z-12xy+12yz-8xz. It is used to calculate the whole square that has combine with terms to expand it for having right answered it.
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