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Problemi Simili mit-Tiftix tal-Web

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25x^{2}-40x+16-\left(7-3x\right)^{2}
Uża teorema binomjali \left(a-b\right)^{2}=a^{2}-2ab+b^{2} biex tespandi \left(5x-4\right)^{2}.
25x^{2}-40x+16-\left(49-42x+9x^{2}\right)
Uża teorema binomjali \left(a-b\right)^{2}=a^{2}-2ab+b^{2} biex tespandi \left(7-3x\right)^{2}.
25x^{2}-40x+16-49+42x-9x^{2}
Biex issib l-oppost ta' 49-42x+9x^{2}, sib l-oppost ta' kull terminu.
25x^{2}-40x-33+42x-9x^{2}
Naqqas 49 minn 16 biex tikseb -33.
25x^{2}+2x-33-9x^{2}
Ikkombina -40x u 42x biex tikseb 2x.
16x^{2}+2x-33
Ikkombina 25x^{2} u -9x^{2} biex tikseb 16x^{2}.
25x^{2}-40x+16-\left(7-3x\right)^{2}
Uża teorema binomjali \left(a-b\right)^{2}=a^{2}-2ab+b^{2} biex tespandi \left(5x-4\right)^{2}.
25x^{2}-40x+16-\left(49-42x+9x^{2}\right)
Uża teorema binomjali \left(a-b\right)^{2}=a^{2}-2ab+b^{2} biex tespandi \left(7-3x\right)^{2}.
25x^{2}-40x+16-49+42x-9x^{2}
Biex issib l-oppost ta' 49-42x+9x^{2}, sib l-oppost ta' kull terminu.
25x^{2}-40x-33+42x-9x^{2}
Naqqas 49 minn 16 biex tikseb -33.
25x^{2}+2x-33-9x^{2}
Ikkombina -40x u 42x biex tikseb 2x.
16x^{2}+2x-33
Ikkombina 25x^{2} u -9x^{2} biex tikseb 16x^{2}.