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OpenStudy (anonymous):
What is the exact value of the expression 8 sqrt 15 + 5 sqrt 5 + sqrt 15 ? Please show work
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jimthompson5910 (jim_thompson5910):
If we let x = sqrt 15 and y = sqrt 5, then we get 8x + 5y + x Can you simplify this?
OpenStudy (anonymous):
9x+5y?
jimthompson5910 (jim_thompson5910):
Good, now just replace x with sqrt(15) and y with sqrt(5) to get \[\Large 9\sqrt{15}+5\sqrt{5}\]
OpenStudy (anonymous):
ahh ! thank you bunchs!!!!!
jimthompson5910 (jim_thompson5910):
you're welcome
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