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受欢迎的代数 >

x^2+8/7+15/49 =0

解答

x^{2} + \frac{8}{7} + \frac{15}{49} = 0

解答

x = \frac{71}{7} i, x = - \frac{71}{7} i

求解步骤

x^{2} + \frac{8}{7} + \frac{15}{49} = 0

将

\frac{8}{7}

到右边

x^{2} + \frac{15}{49} = - \frac{8}{7}

将

\frac{15}{49}

到右边

x^{2} = - \frac{8}{7} - \frac{15}{49}

化简

- \frac{8}{7} - \frac{15}{49} : - \frac{71}{49}

对于

x^{2} = f (a)

解为

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

x = - \frac{71}{49}, x = - - \frac{71}{49}

- \frac{71}{49} = \frac{71}{7} i

- - \frac{71}{49} = - \frac{71}{7} i

x = \frac{71}{7} i, x = - \frac{71}{7} i

作图

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