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受欢迎的代数 >

x^2+8+12=0

解答

x^{2} + 8 + 12 = 0

解答

x = 25 i, x = - 25 i

求解步骤

x^{2} + 8 + 12 = 0

将

8

到右边

x^{2} + 12 = - 8

将

12

到右边

x^{2} = - 20

对于

x^{2} = f (a)

解为

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

x = - 20, x = - - 20

- 20 = 25 i

- - 20 = - 25 i

x = 25 i, x = - 25 i

作图

流行的例子

(y-1)^2-(y-2)^2=y^2

(y - 1)^{2} - (y - 2)^{2} = y^{2}

3 y^{2} + y - 1 = 0

solvefor x,x^2-5=0

so l v e f or x, x^{2} - 5 = 0

5 u^{2} + 7 u = - 2

(x - 5)^{2} - 8 = - 26