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受欢迎的代数 >

4x^2-10=-9

解答

4 x^{2} - 10 = - 9

解答

x = \frac{1}{2}, x = - \frac{1}{2}

+1

十进制

x = 0.5, x = - 0.5

求解步骤

4 x^{2} - 10 = - 9

将

10

到右边

4 x^{2} = 1

两边除以

4

x^{2} = \frac{1}{4}

对于

x^{2} = f (a)

解为

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

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

\frac{1}{4} = \frac{1}{2}

- \frac{1}{4} = - \frac{1}{2}

x = \frac{1}{2}, x = - \frac{1}{2}

作图

流行的例子

化简 26981.75*1/((1+0.16)^{15)}

s im pl i f y 26981.75 \cdot \frac{1}{( 1 + 0.16 ) ^{15}}

(2 x - 7)^{2} = 8

5 k - 2 k > - 9

∣ t + 2 ∣ = 0

(x-2)/2+(x-3)/3+(x-4)/4 =10

\frac{x - 2}{2} + \frac{x - 3}{3} + \frac{x - 4}{4} = 10