(x+2)(x-1)+2=x(2-x) eching

$$( x + 2 ) ( x - 1 ) + 2 = x ( 2 - x )$$

x uchun yechish

$$x=\frac{1}{2}=0,5$$

$$x=0$$

Faktorlash qadamlari

x+2 ga x-1 ni ko‘paytirish orqali distributiv xususiyatdan foydalaning va ifoda sifatida birlashtiring.

$$x^{2}+x-2+2=x\left(2-x\right)$$

0 olish uchun -2 va 2'ni qo'shing.

$$x^{2}+x=x\left(2-x\right)$$

x ga 2-x ni ko'paytirish orqali distributiv xususiyatdan foydalanish.

$$x^{2}+x=2x-x^{2}$$

Ikkala tarafdan 2x ni ayirish.

$$x^{2}+x-2x=-x^{2}$$

-x ni olish uchun x va -2x ni birlashtirish.

$$x^{2}-x=-x^{2}$$

x^{2} ni ikki tarafga qo’shing.

$$x^{2}-x+x^{2}=0$$

2x^{2} ni olish uchun x^{2} va x^{2} ni birlashtirish.

$$2x^{2}-x=0$$

x omili.

$$x\left(2x-1\right)=0$$

Tenglamani yechish uchun x=0 va 2x-1=0 ni yeching.

$$x=0 x=\frac{1}{2}$$

Kvadrat tenglamalaridan foydalanish qoidalari

x+2 ga x-1 ni ko‘paytirish orqali distributiv xususiyatdan foydalaning va ifoda sifatida birlashtiring.

$$x^{2}+x-2+2=x\left(2-x\right)$$

0 olish uchun -2 va 2'ni qo'shing.

$$x^{2}+x=x\left(2-x\right)$$

x ga 2-x ni ko'paytirish orqali distributiv xususiyatdan foydalanish.

$$x^{2}+x=2x-x^{2}$$

Ikkala tarafdan 2x ni ayirish.

$$x^{2}+x-2x=-x^{2}$$

-x ni olish uchun x va -2x ni birlashtirish.

$$x^{2}-x=-x^{2}$$

x^{2} ni ikki tarafga qo’shing.

$$x^{2}-x+x^{2}=0$$

2x^{2} ni olish uchun x^{2} va x^{2} ni birlashtirish.

$$2x^{2}-x=0$$

Ushbu tenglama standart shaklidadir: ax^{2}+bx+c=0. Kvadrat tenglama formulasida, \frac{-b±\sqrt{b^{2}-4ac}}{2a} 2 ni a, -1 ni b va 0 ni c bilan almashtiring.

$$x=\frac{-\left(-1\right)±\sqrt{1}}{2\times 2}$$

1 ning kvadrat ildizini chiqarish.

$$x=\frac{-\left(-1\right)±1}{2\times 2}$$

-1 ning teskarisi 1 ga teng.

$$x=\frac{1±1}{2\times 2}$$

2 ni 2 marotabaga ko'paytirish.

$$x=\frac{1±1}{4}$$

x=\frac{1±1}{4} tenglamasini yeching, bunda ± musbat. 1 ni 1 ga qo'shish.

$$x=\frac{2}{4}$$

\frac{2}{4} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$x=\frac{1}{2}$$

x=\frac{1±1}{4} tenglamasini yeching, bunda ± manfiy. 1 dan 1 ni ayirish.

$$x=\frac{0}{4}$$

0 ni 4 ga bo'lish.

$$x=0$$

Tenglama yechildi.

$$x=\frac{1}{2} x=0$$

Kvadratni yakunlash bo'yicha qadamlar

x+2 ga x-1 ni ko‘paytirish orqali distributiv xususiyatdan foydalaning va ifoda sifatida birlashtiring.

$$x^{2}+x-2+2=x\left(2-x\right)$$

0 olish uchun -2 va 2'ni qo'shing.

$$x^{2}+x=x\left(2-x\right)$$

x ga 2-x ni ko'paytirish orqali distributiv xususiyatdan foydalanish.

$$x^{2}+x=2x-x^{2}$$

Ikkala tarafdan 2x ni ayirish.

$$x^{2}+x-2x=-x^{2}$$

-x ni olish uchun x va -2x ni birlashtirish.

$$x^{2}-x=-x^{2}$$

x^{2} ni ikki tarafga qo’shing.

$$x^{2}-x+x^{2}=0$$

2x^{2} ni olish uchun x^{2} va x^{2} ni birlashtirish.

$$2x^{2}-x=0$$

Ikki tarafini 2 ga bo‘ling.

$$\frac{2x^{2}-x}{2}=\frac{0}{2}$$

2 ga bo'lish 2 ga ko'paytirishni bekor qiladi.

$$x^{2}-\frac{1}{2}x=\frac{0}{2}$$

0 ni 2 ga bo'lish.

$$x^{2}-\frac{1}{2}x=0$$

-\frac{1}{2} ni bo‘lish, x shartining koeffitsienti, 2 ga -\frac{1}{4} olish uchun. Keyin, -\frac{1}{4} ning kvadratini tenglamaning ikkala tarafiga qo‘shing. Ushbu qadam tenglamaning chap qismini mukammal kvadrat sifatida hosil qiladi.

$$x^{2}-\frac{1}{2}x+\left(-\frac{1}{4}\right)^{2}=\left(-\frac{1}{4}\right)^{2}$$

Kasrning ham suratini, ham maxrajini kvadratga ko'paytirib -\frac{1}{4} kvadratini chiqarish.

$$x^{2}-\frac{1}{2}x+\frac{1}{16}=\frac{1}{16}$$

x^{2}-\frac{1}{2}x+\frac{1}{16} omili. Odatda, x^{2}+bx+c mukammal kvadrat bo'lsa, u doimo \left(x+\frac{b}{2}\right)^{2} omil sifatida bo'lishi mumkin.

$$\left(x-\frac{1}{4}\right)^{2}=\frac{1}{16}$$

Tenglamaning ikkala tarafining kvadrat ildizini chiqarish.

$$\sqrt{\left(x-\frac{1}{4}\right)^{2}}=\sqrt{\frac{1}{16}}$$

Qisqartirish.

$$x-\frac{1}{4}=\frac{1}{4} x-\frac{1}{4}=-\frac{1}{4}$$

\frac{1}{4} ni tenglamaning ikkala tarafiga qo'shish.

$$x=\frac{1}{2} x=0$$