Expand the following:
1.
(x - 2y + 3z)?
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x-2×y+3×z
it os the answer
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2
Step-by-step explanation:
(x-2y-3z)²
=[(x)-(2y+3z)]²
=x²-2x(2y+3z)+(2y+3z)²
=x²-4xy-6xz+4y²+2.2y.3z+9z²
=x²+4y²+9z²-4xy-6xz+12yz
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