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受欢迎的代数 >

(5x-3)(2x+1)=46-x

解答

(5 x - 3) (2 x + 1) = 46 - x

解答

x = \frac{7}{10}, x = - \frac{7}{10}

+1

十进制

x = 2.21359 \dots, x = - 2.21359 \dots

求解步骤

(5 x - 3) (2 x + 1) = 46 - x

展开

(5 x - 3) (2 x + 1) : 10 x^{2} - x - 3

10 x^{2} - x - 3 = 46 - x

将

3

到右边

10 x^{2} - x = - x + 49

将

x

para o lado esquerdo

10 x^{2} = 49

两边除以

10

x^{2} = \frac{49}{10}

对于

x^{2} = f (a)

解为

x = f (a), - f (a)

x = \frac{49}{10}, x = - \frac{49}{10}

\frac{49}{10} = \frac{7}{10}

- \frac{49}{10} = - \frac{7}{10}

x = \frac{7}{10}, x = - \frac{7}{10}

作图

流行的例子

4 x^{2} + 28 x + 53 = 0

(x^2+2)/3 =(2x)/4

\frac{x ^{2} + 2}{3} = \frac{2 x}{4}

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x^{2} - 9 = 55

(x-1)^2+(((-5}{12})(\frac{x+8)/5))^2=+1

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