Answers

2015-08-02T20:58:08+08:00
A.) \frac{3 t^{2} }{3} =  \frac{12}{3}
t²=4
√t²=√4
t=2
b.)x²-7=0
x²=7
√x²=√7
x=√7
c.) \frac{ 3r^{2} }{3} =  \frac{18}{3}
√r²=√6
r=√6
d.)√x²=√150
x=√150
x=√25·6
x=5√6
e.)√x²= \sqrt{ \frac{9}{16} }
x=3/4
0