Question 210764
distribute  first  multiplication
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(x +sqrt x) * (7sqrtx -4)
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use  FOIL  to  distribute
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7xsqrt x -4x +7x -4sqrt x
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collect  like  terms
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7x^(3/2) +3x -4x^(1/2)
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check,,let  x=2,,,both  answer and  original  = 20.13,,,,,,ok