(3x+10)/(2sqrt(x+5))=0

解答

\frac{3 x + 10}{2 x + 5} = 0

x = - \frac{10}{3}

十进制

x = - 3.33333 \dots

求解步骤

\frac{3 x + 10}{2 x + 5} = 0

\frac{f ( x )}{g ( x )} = 0 \Rightarrow f (x) = 0

3 x + 10 = 0

解

3 x + 10 = 0 : x = - \frac{10}{3}

x = - \frac{10}{3}

验证解:

x = - \frac{10}{3}

真

解是

x = - \frac{10}{3}

2 (2 x + 6)^{\frac{1}{2}} = 2 x - 18

5 x^{2} - 2 x + 1 = 2 x

4 x - 3 \times 3 x - 5 = 3 x - 1

4 4 x - 13 = - 15

4 x - 9 = 2 x - 4