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\left(5x^{2}+15x\right)\left(x-4\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 5x ki te x+3.
5x^{3}-20x^{2}+15x^{2}-60x
Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o 5x^{2}+15x ki ia tau o x-4.
5x^{3}-5x^{2}-60x
Pahekotia te -20x^{2} me 15x^{2}, ka -5x^{2}.
\left(5x^{2}+15x\right)\left(x-4\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 5x ki te x+3.
5x^{3}-20x^{2}+15x^{2}-60x
Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o 5x^{2}+15x ki ia tau o x-4.
5x^{3}-5x^{2}-60x
Pahekotia te -20x^{2} me 15x^{2}, ka -5x^{2}.