a^2=7 eching

$$a ^ { 2 } = 7$$

a uchun yechish

$$a=\sqrt{7}\approx 2,645751311$$

$$a=-\sqrt{7}\approx -2,645751311$$

Kvadrat ildizini topish bo'yicha qadamlar

Tenglamaning ikkala tarafining kvadrat ildizini chiqarish.

$$a=\sqrt{7} a=-\sqrt{7}$$

Kvadrat tenglamalaridan foydalanish qoidalari

Ikkala tarafdan 7 ni ayirish.

$$a^{2}-7=0$$

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 -7 ni c bilan almashtiring.

$$a=\frac{0±\sqrt{0^{2}-4\left(-7\right)}}{2}$$

0 kvadratini chiqarish.

$$a=\frac{0±\sqrt{-4\left(-7\right)}}{2}$$

-4 ni -7 marotabaga ko'paytirish.

$$a=\frac{0±\sqrt{28}}{2}$$

28 ning kvadrat ildizini chiqarish.

$$a=\frac{0±2\sqrt{7}}{2}$$

a=\frac{0±2\sqrt{7}}{2} tenglamasini yeching, bunda ± musbat.

$$a=\sqrt{7}$$

a=\frac{0±2\sqrt{7}}{2} tenglamasini yeching, bunda ± manfiy.

$$a=-\sqrt{7}$$

Tenglama yechildi.

$$a=\sqrt{7} a=-\sqrt{7}$$