Question 224811
(3sqrt2 -6sqrt5)(4sqrt2+8sqrt5)
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use  distribution  or  FOIL
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(3sqrt2)(4sqrt(2) +(3sqrt2)(8sqrt5)-(6sqrt5)(4sqrt2)-(6sqrt5)(8sqrt5)
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{(3*4)(sqrt2*sqrt2)}+{(3*8)(sqrt2*sqrt5)}-{6*4)(sqrt5*sqrt2)} -{(6*8)(sqrt5*sqrt5)}
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{12 sqrt4} + {24sqrt(10) - {24sqrt10} - {48sqrt25}
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{12*2} +[0} - {48*5}
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24 - 240
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-216
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Check,,,,use  calc to  est  original,,,,ok
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