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受欢迎的代数 >

ax^2-8x+c=0

解答

a x^{2} - 8 x + c = 0

解答

x = \frac{4 + - a c + 16}{a}, x = \frac{4 - - a c + 16}{a}; a \neq = 0

求解步骤

a x^{2} - 8 x + c = 0

使用求根公式求解

x_{1, 2} = \frac{- ( - 8 ) \pm ( - 8 ) ^{2} - 4 a c}{2 a}

化简

(- 8)^{2} - 4 a c : 2 16 - a c

x_{1, 2} = \frac{- ( - 8 ) \pm 2 16 - a c}{2 a}; a \neq = 0

将解分隔开

x_{1} = \frac{- ( - 8 ) + 2 16 - a c}{2 a}, x_{2} = \frac{- ( - 8 ) - 2 16 - a c}{2 a}

x = \frac{- ( - 8 ) + 2 16 - a c}{2 a} : \frac{4 + - a c + 16}{a}

x = \frac{- ( - 8 ) - 2 16 - a c}{2 a} : \frac{4 - - a c + 16}{a}

二次方程组的解是:

x = \frac{4 + - a c + 16}{a}, x = \frac{4 - - a c + 16}{a}; a \neq = 0

作图

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