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受欢迎的代数 >

-x^2+14=10

解答

- x^{2} + 14 = 10

解答

x = 2, x = - 2

求解步骤

- x^{2} + 14 = 10

将

14

到右边

- x^{2} = - 4

两边除以

- 1

x^{2} = 4

对于

x^{2} = f (a)

解为

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

x = 4, x = - 4

4 = 2

- 4 = - 2

x = 2, x = - 2

作图

流行的例子

x^{2} - 10 x - 19 = 0

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