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Problemi Simili mit-Tiftix tal-Web

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9\left(x^{2}-2x+1\right)-\left(2x+3\right)^{2}
Uża teorema binomjali \left(a-b\right)^{2}=a^{2}-2ab+b^{2} biex tespandi \left(x-1\right)^{2}.
9x^{2}-18x+9-\left(2x+3\right)^{2}
Uża l-propjetà distributtiva biex timmultiplika 9 b'x^{2}-2x+1.
9x^{2}-18x+9-\left(4x^{2}+12x+9\right)
Uża teorema binomjali \left(a+b\right)^{2}=a^{2}+2ab+b^{2} biex tespandi \left(2x+3\right)^{2}.
9x^{2}-18x+9-4x^{2}-12x-9
Biex issib l-oppost ta' 4x^{2}+12x+9, sib l-oppost ta' kull terminu.
5x^{2}-18x+9-12x-9
Ikkombina 9x^{2} u -4x^{2} biex tikseb 5x^{2}.
5x^{2}-30x+9-9
Ikkombina -18x u -12x biex tikseb -30x.
5x^{2}-30x
Naqqas 9 minn 9 biex tikseb 0.
9\left(x^{2}-2x+1\right)-\left(2x+3\right)^{2}
Uża teorema binomjali \left(a-b\right)^{2}=a^{2}-2ab+b^{2} biex tespandi \left(x-1\right)^{2}.
9x^{2}-18x+9-\left(2x+3\right)^{2}
Uża l-propjetà distributtiva biex timmultiplika 9 b'x^{2}-2x+1.
9x^{2}-18x+9-\left(4x^{2}+12x+9\right)
Uża teorema binomjali \left(a+b\right)^{2}=a^{2}+2ab+b^{2} biex tespandi \left(2x+3\right)^{2}.
9x^{2}-18x+9-4x^{2}-12x-9
Biex issib l-oppost ta' 4x^{2}+12x+9, sib l-oppost ta' kull terminu.
5x^{2}-18x+9-12x-9
Ikkombina 9x^{2} u -4x^{2} biex tikseb 5x^{2}.
5x^{2}-30x+9-9
Ikkombina -18x u -12x biex tikseb -30x.
5x^{2}-30x
Naqqas 9 minn 9 biex tikseb 0.