Math help. Add square roots?

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Math help. Add square roots?

I'm not entirely sure how to add square roots like lets say I wanted to add (sq. rt.(80) + 6 + sq. rt. (68))/2. I was able to simplify it to (4sq.rt.(5) + 6 + 2sq.rt.(17))/2 but I'm not sure if that's the right thing to do. I'm not sure of my next step either. Your help will be greatly appreciated.

2007-01-25 19:38:08 · 2 answers · asked by Alex L 2 in Education & Reference ➔ Homework Help

2 answers

Just take it one more step to 2√5 + 3 +√17. That's as far as you can go without actually evaluating the roots.

2007-01-25 19:54:26 · answer #1 · answered by gp4rts 7 · 1⤊ 0⤋

yes,you are right.Just divide the expression by 2 and you get your answer which is 3+2sqrt(5)+sqrt(!7)

2007-01-25 22:05:34 · answer #2 · answered by alpha 7 · 0⤊ 0⤋