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受欢迎的代数 >

5y^2+3sqrt(5)+2=0

解答

5 y^{2} + 35 + 2 = 0

解答

y = \frac{- 3 5 - 2}{5}, y = - \frac{- 3 5 - 2}{5}

求解步骤

5 y^{2} + 35 + 2 = 0

将

35

到右边

5 y^{2} + 2 = - 35

将

2

到右边

5 y^{2} = - 35 - 2

两边除以

5

y^{2} = \frac{- 3 5 - 2}{5}

对于

x^{2} = f (a)

解为

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

y = \frac{- 3 5 - 2}{5}, y = - \frac{- 3 5 - 2}{5}

作图

流行的例子

3 s^{2} - 9 s - 1 = 0

2 x^{2} = - 7 x - 6

completesquare h^2-10h-4=0

co m pl e t es q u a re h^{2} - 10 h - 4 = 0

completesquare w^2+12w

co m pl e t es q u a re w^{2} + 12 w

x^{2} - 30 = 7 x