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受欢迎的代数 >

x_{1}=((sqrt(5)))/3 ,x^2=((sqrt(5)))/5

解答

x_{1} = \frac{( 5 )}{3}, x^{2} = \frac{( 5 )}{5}

解答

x = - \frac{1}{5}, x = \frac{1}{5}, x_{1} = \frac{5}{3} x_{1} = \frac{5}{3}

求解步骤

x_{1} = \frac{( 5 )}{3} x^{2} = \frac{( 5 )}{5}

解

x^{2} = \frac{( 5 )}{5} : x = - \frac{1}{5}, x = \frac{1}{5}

对于

x_{1} = \frac{( 5 )}{3}

，用

- \frac{1}{5}

替代

x : x_{1} = \frac{5}{3}

对于

x_{1} = \frac{( 5 )}{3}

，用

\frac{1}{5}

替代

x : x_{1} = \frac{5}{3}

将解代入原方程进行验证

因而，

x_{1} = \frac{( 5 )}{3}, x^{2} = \frac{( 5 )}{5}

最后的解是

x = - \frac{1}{5}, x = \frac{1}{5}, x_{1} = \frac{5}{3} x_{1} = \frac{5}{3}

作图

流行的例子

2x-y=5,-2x+y=-5

2 x - y = 5, - 2 x + y = - 5

x=7-3y,x^2-y^2=39

x = 7 - 3 y, x^{2} - y^{2} = 39

2x-3y=7,(a+b)x-(a+b-3)y=4a+b

2 x - 3 y = 7, (a + b) x - (a + b - 3) y = 4 a + b

3a+2=3,b+4=3c+5

3 a + 2 = 3, b + 4 = 3 c + 5

1/x+4/y = 2/7 , 4/3 x+1/2 y=-8/5

\frac{1}{x} + \frac{4}{y} = \frac{2}{7}, \frac{4}{3} x + \frac{1}{2} y = - \frac{8}{5}