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受欢迎的代数 >

-110=10-5x^2

解答

- 110 = 10 - 5 x^{2}

解答

x = 26, x = - 26

+1

十进制

x = 4.89897 \dots, x = - 4.89897 \dots

求解步骤

- 110 = 10 - 5 x^{2}

交换两边

10 - 5 x^{2} = - 110

将

10

到右边

- 5 x^{2} = - 120

两边除以

- 5

x^{2} = 24

对于

x^{2} = f (a)

解为

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

x = 24, x = - 24

24 = 26

- 24 = - 26

x = 26, x = - 26

作图

流行的例子

x^{2} + 13 x + 27 = 0

- 2^{2} + 3^{2} = c^{2}

completesquare 4x^2+4x+65

co m pl e t es q u a re 4 x^{2} + 4 x + 65

solvefor y,4y^2+18=96x

so l v e f or y, 4 y^{2} + 18 = 96 x

2 q^{2} + 9 = - q