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受欢迎的代数 >

4x^2+3x-3=-3x

解答

4 x^{2} + 3 x - 3 = - 3 x

解答

x = \frac{- 3 + 21}{4}, x = - \frac{3 + 21}{4}

+1

十进制

x = 0.39564 \dots, x = - 1.89564 \dots

求解步骤

4 x^{2} + 3 x - 3 = - 3 x

将

3 x

para o lado esquerdo

4 x^{2} + 6 x - 3 = 0

使用求根公式求解

x_{1, 2} = \frac{- 6 \pm 6 ^{2} - 4 \cdot 4 ( - 3 )}{2 \cdot 4}

6^{2} - 4 \cdot 4 (- 3) = 221

x_{1, 2} = \frac{- 6 \pm 2 21}{2 \cdot 4}

将解分隔开

x_{1} = \frac{- 6 + 2 21}{2 \cdot 4}, x_{2} = \frac{- 6 - 2 21}{2 \cdot 4}

x = \frac{- 6 + 2 21}{2 \cdot 4} : \frac{- 3 + 21}{4}

x = \frac{- 6 - 2 21}{2 \cdot 4} : - \frac{3 + 21}{4}

二次方程组的解是:

x = \frac{- 3 + 21}{4}, x = - \frac{3 + 21}{4}

作图

流行的例子

x (2 x - 1) = 3

r^{2} + r + 4 = 0

0 = - x^{2} - 6 x - 7

- 10 + 3 x^{2} = 0

80 + y^{2} = 81