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受欢迎的代数 >

sqrt(x+4)-4x=1

解答

x + 4 - 4 x = 1

解答

x = \frac{- 7 + 241}{32}

+1

十进制

x = 0.26638 \dots

求解步骤

x + 4 - 4 x = 1

去除平方根

x + 4 = 1 + 8 x + 16 x^{2}

解

x + 4 = 1 + 8 x + 16 x^{2} : x = \frac{- 7 + 241}{32}, x = \frac{- 7 - 241}{32}

x = \frac{- 7 + 241}{32}, x = \frac{- 7 - 241}{32}

验证解:

x = \frac{- 7 + 241}{32}

真

, x = \frac{- 7 - 241}{32}

假

解是

x = \frac{- 7 + 241}{32}

作图

流行的例子

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5 x + 39 - x + 31 = 2

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