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#
