x uchun yechish
x=2
Grafik
Baham ko'rish
Klipbordga nusxa olish
x^{2}+2x+1-\left(x-1\right)^{2}=8
\left(a+b\right)^{2}=a^{2}+2ab+b^{2} binom teoremasini \left(x+1\right)^{2} kengaytirilishi uchun ishlating.
x^{2}+2x+1-\left(x^{2}-2x+1\right)=8
\left(a-b\right)^{2}=a^{2}-2ab+b^{2} binom teoremasini \left(x-1\right)^{2} kengaytirilishi uchun ishlating.
x^{2}+2x+1-x^{2}+2x-1=8
x^{2}-2x+1 teskarisini topish uchun har birining teskarisini toping.
2x+1+2x-1=8
0 ni olish uchun x^{2} va -x^{2} ni birlashtirish.
4x+1-1=8
4x ni olish uchun 2x va 2x ni birlashtirish.
4x=8
0 olish uchun 1 dan 1 ni ayirish.
x=\frac{8}{4}
Ikki tarafini 4 ga bo‘ling.
x=2
2 ni olish uchun 8 ni 4 ga bo‘ling.
Misollar
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Chegaralar
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