Factor
-\left(a-3b\right)^{2}
Evaluate
-\left(a-3b\right)^{2}
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-a^{2}+6ba-9b^{2}
Consider -a^{2}-9b^{2}+6ab as a polynomial over variable a.
\left(a-3b\right)\left(-a+3b\right)
Find one factor of the form ka^{m}+n, where ka^{m} divides the monomial with the highest power -a^{2} and n divides the constant factor -9b^{2}. One such factor is a-3b. Factor the polynomial by dividing it by this factor.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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Limits
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