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受欢迎的代数 >

4x^2+20=-13

解答

4 x^{2} + 20 = - 13

解答

x = \frac{33}{2} i, x = - \frac{33}{2} i

求解步骤

4 x^{2} + 20 = - 13

将

20

到右边

4 x^{2} = - 33

两边除以

4

x^{2} = - \frac{33}{4}

对于

x^{2} = f (a)

解为

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

x = - \frac{33}{4}, x = - - \frac{33}{4}

- \frac{33}{4} = \frac{33}{2} i

- - \frac{33}{4} = - \frac{33}{2} i

x = \frac{33}{2} i, x = - \frac{33}{2} i

作图

流行的例子

(8-R)^2+(4-R)^2=R^2

(8 - R)^{2} + (4 - R)^{2} = R^{2}

(x) = 4 x^{2} - 3

0.25 = x^{2}

4 p (p - 2) = 4 - 2 p

solvefor x,x^2-2x-48=0

so l v e f or x, x^{2} - 2 x - 48 = 0