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受欢迎的代数 >

x^2-5x+29=7x-6

解答

x^{2} - 5 x + 29 = 7 x - 6

解答

x = 7, x = 5

求解步骤

x^{2} - 5 x + 29 = 7 x - 6

将

6

para o lado esquerdo

x^{2} - 5 x + 35 = 7 x

将

7 x

para o lado esquerdo

x^{2} - 12 x + 35 = 0

使用求根公式求解

x_{1, 2} = \frac{- ( - 12 ) \pm ( - 12 ) ^{2} - 4 \cdot 1 \cdot 35}{2 \cdot 1}

(- 12)^{2} - 4 \cdot 1 \cdot 35 = 2

x_{1, 2} = \frac{- ( - 12 ) \pm 2}{2 \cdot 1}

将解分隔开

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

x = \frac{- ( - 12 ) + 2}{2 \cdot 1} : 7

x = \frac{- ( - 12 ) - 2}{2 \cdot 1} : 5

二次方程组的解是:

x = 7, x = 5

作图

流行的例子

3 (x - 6)^{2} - 6 = 210

10000 x^{2} - 64 = 0

solvefor x,x^2-8x+41=0

so l v e f or x, x^{2} - 8 x + 41 = 0

solvefor x,(8x-2y)/(2y+3)=2x^2-1

so l v e f or x, \frac{8 x - 2 y}{2 y + 3} = 2 x^{2} - 1

4 v^{2} = - 20 v - 25