Question 199271: add or subtract. simplify when possible. 5 squareroot of 3/10 +2 squareroot of 5/6 -6 squareroot of 15/30
Answer by RAY100(1637)   (Show Source):
You can put this solution on YOUR website! 5sqrt (3/10) +2sqrt(5/6) -6 sqrt(15/30),,,,,,,,(.3217)
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5sqrt (3/10) +2sqrt (5/6) -6 sqrt(1/2)
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lcd = sqrt120,,,,mult by sqrt 120 / sqrt120
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[ 5 sqrt3*sqrt12 + 2 sqrt5 *sqrt20 -6sqrt 60] / sqrt120
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[5*sqrt3*sqrt3*sqrt4 + 2 sqrt100 - 6 sqrt4*sqrt15 ] / sqrt120
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[30 +20 -12 sqrt15] sqrt120
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[50 -12sqrt15 ] /sqrt120
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[ 50 -12sqrt15] * sqrt120/ sqrt120
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50 sqrt120/120 -12 sqrt15 *sqrt120/120
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5/12 *2 sqrt30 - 1/10 * 30 sqrt2
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5/6 sqrt30 -3sqrt2 ,,,,,,,,,,, (.3217)
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check using calculator,,,,ok
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