3x^2=81

الحلّ

3 x^{2} = 81

x = 33, x = - 33

العشري

x = 5.19615 \dots, x = - 5.19615 \dots

خطوات الحلّ

3 x^{2} = 81

3

اقسم الطرفين على

x^{2} = 27

x = f (a), - f (a)

الحلول هي

x^{2} = f (a)

لـ

x = 27, x = - 27

27 = 33

- 27 = - 33

x = 33, x = - 33

3 n^{2} + 2 n

\frac{7 - 6 ( 3 )}{5}

16 + 2.4 c = 22.5

(a + b)^{2} + (a - b)^{2}

- \frac{2}{4}