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受欢迎的代数 >

2-3sqrt(x)=-x

解答

2 - 3 x = - x

解答

x = 4, x = 1

求解步骤

2 - 3 x = - x

去除平方根

9 x = x^{2} + 4 x + 4

解

9 x = x^{2} + 4 x + 4 : x = 4, x = 1

x = 4, x = 1

验证解:

x = 4

真

, x = 1

真

解为

x = 4, x = 1

作图

流行的例子

sqrt(144-24z+z^2)=z-12

144 - 24 z + z^{2} = z - 12

4 + \frac{x}{9} = 5

sqrt(2x+41)=sqrt(x)+5

2 x + 41 = x + 5

(x - 4)^{\frac{2}{3}} = 25

x = 6 - x