SOLUTION: how do I multiply and simplify? sq rt 7 times ((sq rt x) -7 sq rt 7)

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Question 669616: how do I multiply and simplify? sq rt 7 times ((sq rt x) -7 sq rt 7)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%287%29%2A%28sqrt%28x%29-7%2Asqrt%287%29%29

sqrt%287%29%2Asqrt%28x%29-sqrt%287%29%2A7%2Asqrt%287%29

sqrt%287%2Ax%29-7%2Asqrt%287%2A7%29

sqrt%287x%29-7%2Asqrt%287%5E2%29

sqrt%287x%29-7%2A7

sqrt%287x%29-49

-49%2Bsqrt%287x%29

So sqrt%287%29%2A%28sqrt%28x%29-7%2Asqrt%287%29%29 simplifies to -49%2Bsqrt%287x%29