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受欢迎的代数 >

-2(x-3)^2+8=10

解答

- 2 (x - 3)^{2} + 8 = 10

解答

x = i + 3, x = - i + 3

求解步骤

- 2 (x - 3)^{2} + 8 = 10

将

8

到右边

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

两边除以

- 2

(x - 3)^{2} = - 1

对于

(g (x))^{2} = f (a)

解为

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

解

x - 3 = - 1 : x = i + 3

解

x - 3 = - - 1 : x = - i + 3

二次方程组的解是:

x = i + 3, x = - i + 3

作图

流行的例子

solvefor v,E=mgh+(mv^2)/2

so l v e f or v, E = m g h + \frac{m v ^{2}}{2}

18 - x^{2} = 0

solvefor m,m^2+n^2=10

so l v e f or m, m^{2} + n^{2} = 10

- 9 x^{2} + 36 x = 38

x^2-1/3 x-2/9 =0

x^{2} - \frac{1}{3} x - \frac{2}{9} = 0