__sqrt 15____
2 + sqrt 5
_10 + sqrt 50_
5
2007-02-22 07:16:31 · 2 answers · asked by tonda_web_designer21 2 in Science & Mathematics ➔ Mathematics
I'm assuming you mean that these are divided?
The first one needs to be multiplied by the conjugate. so the original expression mutliplied by 2 - root 5 over 2 - root 5.
The second one you should be able to divide the 5 into both. So 10/5 and sqrt 50 divided by 5.
Hopefully this will get you started and on the right track.
2007-02-22 07:30:50 · answer #1 · answered by huckleberry 5 · 0⤊ 0⤋
{Question 1}
___sqrt 15___ =
2+sqrt 5
___3.87___ =
2+2.24
___3.87___ =
4.24
= 0.912
{Question 2}
___10 + sqrt50___=
5
___10+7.07___=
5
___17.07___=
5
= 3.414
I hope this helps!!!
2007-02-22 15:35:34 · answer #2 · answered by Anonymous · 0⤊ 0⤋