Posted by katelynn on Thursday, February 16, 2012 at 8:13pm.
I have no idea how tp simplify 2 sq.root203 sq.root72 sq.root5+4 sq.root63? I guessed 2 sq.root53 sq.root7+4 sq.root63 is it right?

algebra1  MathGuru, Friday, February 17, 2012 at 7:28pm
I'm going to assume your problem is this:
2√20  3√7  2√5 + 4√63
√20 breaks down to √5*2*2
√63 breaks down to √7*3*3
Therefore:
2√20 becomes 4√5
4√63 becomes 12√7
Now we have:
4√5  3√7  2√5 + 12√7
Combine like terms and simplify:
2√5 + 9√7
That is as far as you can go.
I hope this helps and is what you were asking.