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Tohaina

6\left(3x+7y\right)\left(3x-7y\right)
Whakareatia te 2 ki te 3, ka 6.
\left(18x+42y\right)\left(3x-7y\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 6 ki te 3x+7y.
54x^{2}-126xy+126yx-294y^{2}
Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o 18x+42y ki ia tau o 3x-7y.
54x^{2}-294y^{2}
Pahekotia te -126xy me 126yx, ka 0.
6\left(3x+7y\right)\left(3x-7y\right)
Whakareatia te 2 ki te 3, ka 6.
\left(18x+42y\right)\left(3x-7y\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 6 ki te 3x+7y.
54x^{2}-126xy+126yx-294y^{2}
Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o 18x+42y ki ia tau o 3x-7y.
54x^{2}-294y^{2}
Pahekotia te -126xy me 126yx, ka 0.