1.
x=\frac{1}{2},x=-\frac{1}{2}
2.
x=\frac{1}{\sqrt{2}},x=-\frac{1}{\sqrt{2}}
3.
x=\frac{1}{\sqrt{3}},x=-\frac{1}{\sqrt{3}}
4.
t=\frac{1}{3},t=-\frac{1}{3}
5.
x=\frac{3}{4},x=-\frac{3}{4}
6.
x=\frac{2}{5},x=-\frac{2}{5}
7.
m=\frac{5}{6},m=-\frac{5}{6}
8.
x=\frac{2}{3},x=-\frac{2}{3}
9.
c=\frac{4}{3},c=-\frac{4}{3}
10.
x=\frac{1}{\sqrt{5}},x=-\frac{1}{\sqrt{5}}
