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受欢迎的代数 >

sqrt(x+1)=x-1

解答

x + 1 = x - 1

解答

x = 3

求解步骤

x + 1 = x - 1

两边进行平方:

x + 1 = x^{2} - 2 x + 1

x + 1 = x^{2} - 2 x + 1

解

x + 1 = x^{2} - 2 x + 1 : x = 3, x = 0

x = 3, x = 0

验证解:

x = 3

真

, x = 0

假

解是

x = 3

作图

流行的例子

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