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Whakaroha
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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

x^{2}-2^{2}-x\left(x-5\right)
Whakaarohia te \left(x-2\right)\left(x+2\right). Ka taea te whakareanga te panoni ki te rerekētanga o ngā pūrua mā te ture: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
x^{2}-4-x\left(x-5\right)
Tātaihia te 2 mā te pū o 2, kia riro ko 4.
x^{2}-4-\left(x^{2}-5x\right)
Whakamahia te āhuatanga tohatoha hei whakarea te x ki te x-5.
x^{2}-4-x^{2}-\left(-5x\right)
Hei kimi i te tauaro o x^{2}-5x, kimihia te tauaro o ia taurangi.
x^{2}-4-x^{2}+5x
Ko te tauaro o -5x ko 5x.
-4+5x
Pahekotia te x^{2} me -x^{2}, ka 0.
x^{2}-2^{2}-x\left(x-5\right)
Whakaarohia te \left(x-2\right)\left(x+2\right). Ka taea te whakareanga te panoni ki te rerekētanga o ngā pūrua mā te ture: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
x^{2}-4-x\left(x-5\right)
Tātaihia te 2 mā te pū o 2, kia riro ko 4.
x^{2}-4-\left(x^{2}-5x\right)
Whakamahia te āhuatanga tohatoha hei whakarea te x ki te x-5.
x^{2}-4-x^{2}-\left(-5x\right)
Hei kimi i te tauaro o x^{2}-5x, kimihia te tauaro o ia taurangi.
x^{2}-4-x^{2}+5x
Ko te tauaro o -5x ko 5x.
-4+5x
Pahekotia te x^{2} me -x^{2}, ka 0.