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Evaluate sqrt7x (sqrt x-7 sqrt7) Show your work.


sqrt(7)*sqrt(x)-sqrt(7)*7*sqrt(7)
sqrt(7*x)-7*sqrt(7*7)
sqrt(7x)-7*sqrt(7^2)
x*sqrt 7x-49*x

^^^ would this be my final answer?

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1 answer
  1. Assuming you meant:

    √7 x(√x - 7√7)
    = x√(7x) - 49x

    brackets are important here

    e.g √(7x) vs √7x , the last one is (√7)x

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