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受欢迎的代数 >

(2x+1)^2=31

解答

(2 x + 1)^{2} = 31

解答

x = \frac{31 - 1}{2}, x = \frac{- 31 - 1}{2}

+1

十进制

x = 2.28388 \dots, x = - 3.28388 \dots

求解步骤

(2 x + 1)^{2} = 31

对于

(g (x))^{2} = f (a)

解为

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

解

2 x + 1 = 31 : x = \frac{31 - 1}{2}

解

2 x + 1 = - 31 : x = \frac{- 31 - 1}{2}

二次方程组的解是:

x = \frac{31 - 1}{2}, x = \frac{- 31 - 1}{2}

作图

流行的例子

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