How do you multiply 3\sqrt { 5} \cdot 3\sqrt { 5}?
1 Answer
Feb 23, 2017
Explanation:
separate the integers from the radicals.
rArrcolor(red)(3)xxcolor(blue)(sqrt5)xxcolor(red)(3)xxcolor(blue)(sqrt5)
=(color(red)(3)xxcolor(red)(3))xx(color(blue)(sqrt5)xxcolor(blue)(sqrt5))
=9xx5
=45
