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受欢迎的代数 >

3x^2-11=0

解答

3 x^{2} - 11 = 0

解答

x = \frac{11}{3}, x = - \frac{11}{3}

+1

十进制

x = 1.91485 \dots, x = - 1.91485 \dots

求解步骤

3 x^{2} - 11 = 0

将

11

到右边

3 x^{2} = 11

两边除以

3

x^{2} = \frac{11}{3}

对于

x^{2} = f (a)

解为

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

x = \frac{11}{3}, x = - \frac{11}{3}

作图

流行的例子

化简 pi/6+pi/4

s im pl i f y \frac{π}{6} + \frac{π}{4}

4 x^{2} - 2 = 7 x

3 x^{2} - 3 x - 6 = 0

2 x + 1 = 5 x + 1 - 3 x

∣ 2 x + 5 ∣ = 3