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Tohaina

\left(-12x-6\right)\left(6x+1\right)+3\left(4x-3^{2}\right)
Whakamahia te āhuatanga tohatoha hei whakarea te -6 ki te 2x+1.
-72x^{2}-12x-36x-6+3\left(4x-3^{2}\right)
Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o -12x-6 ki ia tau o 6x+1.
-72x^{2}-48x-6+3\left(4x-3^{2}\right)
Pahekotia te -12x me -36x, ka -48x.
-72x^{2}-48x-6+3\left(4x-9\right)
Tātaihia te 3 mā te pū o 2, kia riro ko 9.
-72x^{2}-48x-6+12x-27
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te 4x-9.
-72x^{2}-36x-6-27
Pahekotia te -48x me 12x, ka -36x.
-72x^{2}-36x-33
Tangohia te 27 i te -6, ka -33.
\left(-12x-6\right)\left(6x+1\right)+3\left(4x-3^{2}\right)
Whakamahia te āhuatanga tohatoha hei whakarea te -6 ki te 2x+1.
-72x^{2}-12x-36x-6+3\left(4x-3^{2}\right)
Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o -12x-6 ki ia tau o 6x+1.
-72x^{2}-48x-6+3\left(4x-3^{2}\right)
Pahekotia te -12x me -36x, ka -48x.
-72x^{2}-48x-6+3\left(4x-9\right)
Tātaihia te 3 mā te pū o 2, kia riro ko 9.
-72x^{2}-48x-6+12x-27
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te 4x-9.
-72x^{2}-36x-6-27
Pahekotia te -48x me 12x, ka -36x.
-72x^{2}-36x-33
Tangohia te 27 i te -6, ka -33.