x*x=391 eching

$$x \times x=391$$

x uchun yechish

$$x=\sqrt{391}\approx 19,773719933$$

$$x=-\sqrt{391}\approx -19,773719933$$

Kvadrat ildizini topish bo'yicha qadamlar

x^{2} hosil qilish uchun x va x ni ko'paytirish.

$$x^{2}=391$$

Tenglamaning ikkala tarafining kvadrat ildizini chiqarish.

$$x=\sqrt{391} x=-\sqrt{391}$$

Kvadrat tenglamalaridan foydalanish qoidalari

x^{2} hosil qilish uchun x va x ni ko'paytirish.

$$x^{2}=391$$

Ikkala tarafdan 391 ni ayirish.

$$x^{2}-391=0$$

Ushbu tenglama standart shaklidadir: ax^{2}+bx+c=0. Kvadrat tenglama formulasida, \frac{-b±\sqrt{b^{2}-4ac}}{2a} 1 ni a, 0 ni b va -391 ni c bilan almashtiring.

$$x=\frac{0±\sqrt{0^{2}-4\left(-391\right)}}{2}$$

0 kvadratini chiqarish.

$$x=\frac{0±\sqrt{-4\left(-391\right)}}{2}$$

-4 ni -391 marotabaga ko'paytirish.

$$x=\frac{0±\sqrt{1564}}{2}$$

1564 ning kvadrat ildizini chiqarish.

$$x=\frac{0±2\sqrt{391}}{2}$$

x=\frac{0±2\sqrt{391}}{2} tenglamasini yeching, bunda ± musbat.

$$x=\sqrt{391}$$

x=\frac{0±2\sqrt{391}}{2} tenglamasini yeching, bunda ± manfiy.

$$x=-\sqrt{391}$$

Tenglama yechildi.

$$x=\sqrt{391} x=-\sqrt{391}$$