Question

factorise(-x+2y-3z)^2​

Answer 1

Answer:

x²+ 4y²+9z²-4xy-12yz+6zx

Answer 2

Answer:

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${( - x + 2y - 3z)}^{2}$

$={( - x})^{2} + {(2y)}^{2} + {( - 3z)}^{2} + 2( - x)(2y) + 2(2y)( - 3z) + 2( - 3z)( - x)$

$={x}^{2} + {4y}^{2} + {9z}^{2} - 4xy - 12yz + 6xz$

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