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受欢迎的代数 >

sqrt(x)= 1/4 x

解答

x = \frac{1}{4} x

解答

x = 16, x = 0

求解步骤

x = \frac{1}{4} x

在两边乘以

4

x \cdot 4 = \frac{1}{4} x \cdot 4

化简

x \cdot 4 = x

两边进行平方:

16 x = x^{2}

16 x = x^{2}

解

16 x = x^{2} : x = 16, x = 0

x = 16, x = 0

验证解:

x = 16

真

, x = 0

真

解为

x = 16, x = 0

作图

流行的例子

1+sqrt(x)=sqrt(1+x^2)

1 + x = 1 + x^{2}

\sqrt[3]{14x^2-49x}=x

3 14 x^{2} - 49 x = x

2 x - 5 - 3 = 3

2 x - 1 = 4 - x

sqrt(w^2-20)-2=2

w^{2} - 20 - 2 = 2