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what is (3x-3) to the second power
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hi :)
hi
\[(3x-3)(3x-3)=9x ^{2} -18x +9\]
\[(3x-3)^{2} = (3x-3)(3x-3)\]
x is multiplication
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oh okay :)
\[(3\times-3)(3\times-3)\]
\[3\times-3=-9\]
\[(-9)\times(-9)\]
\[81\]
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did you understand? :)
so minus 10 would be 71?
81-10=71 yes :)
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