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受欢迎的代数 >

solvefor x,f=x^2-6x+m-3

解答

求解

x, f = x^{2} - 6 x + m - 3

解答

x = 3 + f + 12 - m, x = 3 - f + 12 - m

求解步骤

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

交换两边

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

将

f

para o lado esquerdo

x^{2} - 6 x + m - 3 - f = 0

使用求根公式求解

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

化简

(- 6)^{2} - 4 \cdot 1 \cdot (m - 3 - f) : 2 f + 12 - m

x_{1, 2} = \frac{- ( - 6 ) \pm 2 f + 12 - m}{2 \cdot 1}

将解分隔开

x_{1} = \frac{- ( - 6 ) + 2 f + 12 - m}{2 \cdot 1}, x_{2} = \frac{- ( - 6 ) - 2 f + 12 - m}{2 \cdot 1}

x = \frac{- ( - 6 ) + 2 f + 12 - m}{2 \cdot 1} : 3 + f + 12 - m

x = \frac{- ( - 6 ) - 2 f + 12 - m}{2 \cdot 1} : 3 - f + 12 - m

二次方程组的解是:

x = 3 + f + 12 - m, x = 3 - f + 12 - m

作图

流行的例子

x^{2} + x = \frac{19}{4}

2 x (x - 2) + 2 = 5 - 3 x

y^{2} - 3 y - 10 = 0

x^{2} + 10 + 21 = 0

solvefor x,x^2-45mx+15m^2=0

so l v e f or x, x^{2} - 45 m x + 15 m^{2} = 0