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algebra1

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I have no idea how tp simplify 2 sq.root20-3 sq.root7-2 sq.root5+4 sq.root63? I guessed 2 sq.root5-3 sq.root7+4 sq.root63 is it right?

  • algebra1 -

    I'm going to assume your problem is this:

    2√20 - 3√7 - 2√5 + 4√63

    √20 breaks down to √5*2*2
    √63 breaks down to √7*3*3

    Therefore:
    2√20 becomes 4√5
    4√63 becomes 12√7

    Now we have:
    4√5 - 3√7 - 2√5 + 12√7

    Combine like terms and simplify:
    2√5 + 9√7

    That is as far as you can go.

    I hope this helps and is what you were asking.

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