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受欢迎的代数 >

(v+1/5)^2-9=0

解答

(v + \frac{1}{5})^{2} - 9 = 0

解答

v = \frac{14}{5}, v = - \frac{16}{5}

+1

十进制

v = 2.8, v = - 3.2

求解步骤

(v + \frac{1}{5})^{2} - 9 = 0

将

9

到右边

(v + \frac{1}{5})^{2} = 9

对于

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

解为

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

解

v + \frac{1}{5} = 9 : v = \frac{14}{5}

解

v + \frac{1}{5} = - 9 : v = - \frac{16}{5}

二次方程组的解是:

v = \frac{14}{5}, v = - \frac{16}{5}

作图

流行的例子

5 x^{2} - 8 x + 2 = 0

3/2 p-5+9/4 p=7-5/4 p

\frac{3}{2} p - 5 + \frac{9}{4} p = 7 - \frac{5}{4} p

因式分解 10x^2+13x+3

f a c t or 10 x^{2} + 13 x + 3

4 x + 1 = x - 8

0.9 x - 5.9 = 0.4