Question 525956
f + g = x+7+sqrt(x)
f - g = x+7-sqrt(x)
fg = sqrt(x)(x+7) = x*sqrt(x)+7sqrt(x)
f/g = (x+7)/sqrt(x) = (x+7)/sqrt(x) * sqrt(x)/sqrt(x) = sqrt(x)(x+7)/x
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Ed