need help again: sqrt75a^2 / sqrt5
- Thread starter pezgrl78
- Start date
pezgrl78 said:
Either way works fine.
\(\displaystyle \L \frac{\sqrt{75a^2}}{\sqrt{5}} \,\, = \,\, \frac{\sqrt{75a^2}}{\sqrt{5}} \cdot \frac{\sqrt{5}}{\sqrt{5}} \,\, = \,\, \frac{\sqrt{375a^2}}{\sqrt{25}} \,\, \\ \,\, \,\, \,\, \,\, \,\, = \,\, \frac{\sqrt{25 \cdot 15 a^2}}{5} \,\, = \,\, \frac{\sqrt{(5a)^2 \cdot 15}}{5} \,\, \\ \,\, \,\, \,\, \,\, \,\, = \,\, \frac{|5a|\sqrt{15}}{5} \,\, = \,\, |a|\sqrt{15}\)
