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受欢迎的代数 >

-8x^2-3x-2=-10x^2

解答

- 8 x^{2} - 3 x - 2 = - 10 x^{2}

解答

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

+1

十进制

x = 2, x = - 0.5

求解步骤

- 8 x^{2} - 3 x - 2 = - 10 x^{2}

将

10 x^{2}

para o lado esquerdo

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

使用求根公式求解

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

(- 3)^{2} - 4 \cdot 2 (- 2) = 5

x_{1, 2} = \frac{- ( - 3 ) \pm 5}{2 \cdot 2}

将解分隔开

x_{1} = \frac{- ( - 3 ) + 5}{2 \cdot 2}, x_{2} = \frac{- ( - 3 ) - 5}{2 \cdot 2}

x = \frac{- ( - 3 ) + 5}{2 \cdot 2} : 2

x = \frac{- ( - 3 ) - 5}{2 \cdot 2} : - \frac{1}{2}

二次方程组的解是:

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

作图

流行的例子

x (x + 1) = 360

solvefor x,x^2y+y=x+1

so l v e f or x, x^{2} y + y = x + 1

4 (x + 3)^{2} = 32

t^{2} - 10 t + 9 = 0

x (x + 2) = 24