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受欢迎的代数 >

14-(5x)(2x+3)=17-(10x+1)(x-6)

解答

14 - (5 x) (2 x + 3) = 17 - (10 x + 1) (x - 6)

解答

x = - \frac{9}{74}

+1

十进制

x = - 0.12162 \dots

求解步骤

14 - (5 x) (2 x + 3) = 17 - (10 x + 1) (x - 6)

14 - 5 x (2 x + 3) = 17 - (10 x + 1) (x - 6)

乘开

- 5 x (2 x + 3) : - 10 x^{2} - 15 x

14 - 10 x^{2} - 15 x = 17 - (10 x + 1) (x - 6)

展开

17 - (10 x + 1) (x - 6) : - 10 x^{2} + 59 x + 23

14 - 10 x^{2} - 15 x = - 10 x^{2} + 59 x + 23

将

14

到右边

- 10 x^{2} - 15 x = - 10 x^{2} + 59 x + 9

两边减去

- 10 x^{2} + 59 x

- 10 x^{2} - 15 x - (- 10 x^{2} + 59 x) = - 10 x^{2} + 59 x + 9 - (- 10 x^{2} + 59 x)

化简

- 74 x = 9

两边除以

- 74

x = - \frac{9}{74}

作图

流行的例子

solvefor x,((x+4))/3-((y-9))/6 = 8/3

so l v e f or x, \frac{( x + 4 )}{3} - \frac{( y - 9 )}{6} = \frac{8}{3}

solvefor x,y-2=1(x-1)

so l v e f or x, y - 2 = 1 (x - 1)

(14+(3x-2))/4 =3x

\frac{14 + ( 3 x - 2 )}{4} = 3 x

solvefor x,7x-10y=70

so l v e f or x, 7 x - 10 y = 70

2 a = 3 + 5