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受欢迎的代数 >

16(4+2x)^2-47=2

解答

16 (4 + 2 x)^{2} - 47 = 2

解答

x = - \frac{9}{8}, x = - \frac{23}{8}

+1

十进制

x = - 1.125, x = - 2.875

求解步骤

16 (4 + 2 x)^{2} - 47 = 2

将

47

到右边

16 (4 + 2 x)^{2} = 49

两边除以

16

(4 + 2 x)^{2} = \frac{49}{16}

对于

(g (x))^{2} = f (a)

解为

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

解

4 + 2 x = \frac{49}{16} : x = - \frac{9}{8}

解

4 + 2 x = - \frac{49}{16} : x = - \frac{23}{8}

二次方程组的解是:

x = - \frac{9}{8}, x = - \frac{23}{8}

作图

流行的例子

- 3 x^{2} - 6 x + 15 = 0

x^{2} + 2 x = 14

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

v^{2} - 7 v + 6 = 0

6 x + x^{2} + 9 = 0