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受欢迎的代数 >

-x^2-3x+2=6

解答

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

解答

x = - \frac{3}{2} - i \frac{7}{2}, x = - \frac{3}{2} + i \frac{7}{2}

求解步骤

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

将

6

para o lado esquerdo

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

使用求根公式求解

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

化简

(- 3)^{2} - 4 (- 1) (- 4) : 7 i

x_{1, 2} = \frac{- ( - 3 ) \pm 7 i}{2 ( - 1 )}

将解分隔开

x_{1} = \frac{- ( - 3 ) + 7 i}{2 ( - 1 )}, x_{2} = \frac{- ( - 3 ) - 7 i}{2 ( - 1 )}

x = \frac{- ( - 3 ) + 7 i}{2 ( - 1 )} : - \frac{3}{2} - i \frac{7}{2}

x = \frac{- ( - 3 ) - 7 i}{2 ( - 1 )} : - \frac{3}{2} + i \frac{7}{2}

二次方程组的解是:

x = - \frac{3}{2} - i \frac{7}{2}, x = - \frac{3}{2} + i \frac{7}{2}

作图

流行的例子

化简 9^{2/3}*3^{2/3}

s im pl i f y 9^{\frac{2}{3}} \cdot 3^{\frac{2}{3}}

6 x^{2} - 3 x - 1 = 0

因式分解-6x^2+6x

f a c t or - 6 x^{2} + 6 x

因式分解 5x^4+10x^3-175x^2

f a c t or 5 x^{4} + 10 x^{3} - 175 x^{2}

因式分解 4a+4b

f a c t or 4 a + 4 b