Hey guys, I was away when my Principals 10 class did radicals.. now I have no clue what I'm doing & I have a mid-term next week yay!
Can someone please help me?
thanks so much
I have a few haha.
Uhh lets see, here's one.. I just figured how to do the √ thing haha.
its 2√20 - √8 + √18 - 3√45
I got an anwser of -5√5-5√2... buttt I think I got it wrong.
here are my steps :S
2√4 x 5 - √ 4 x 2 + √ 9 x 2 - 3 √ 9 x 5 =
2 x 2 √5 - 2 √2 + 3√2 - 3 x 3 √5=
4√5 - 2√2 + 3√2 - 9√5=
-5√5 - 5√2
I really don't know.. there could've been something wrong when I wrote it down.. it tends to happen..
but I was on the right track, right?
I have another question too (if you don't mind)
(exp)3√16 + (exp)3√54 {is it the same, but you just keep the same exponent?... }