Answer:
1) expand the radical by seperating it according to its factors;
[tex]3\sqrt{135}[/tex]
[tex]3\sqrt{27*5}[/tex]
3[tex]\sqrt{9*3*5}[/tex]
SINCE 9 is a PERFECT SQUARE WE CAN TAKE IT OUTSIDE THE RADICAL, BUT WE MUST TAKE THE SQUARE ROOT OF IT BEFORE WE CAN TAKE IT OUT OF THE RADICAL:
sqrt9=3
so
3*3[tex]\sqrt{3*5}[/tex]
9[tex]\sqrt{15}[/tex]
