√60 + 2√135 – 2√240 plz show with paperwork im really confused (ncrt playing with numbers)

Question

√60 + 2√135 – 2√240 plz show with paperwork im really confused (ncrt playing with numbers)

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Skylar 3 weeks 2021-12-28T19:38:58+00:00 1 Answer 0 views 0

Answers ( )

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    2021-12-28T19:40:50+00:00

    Answer:

    √60 + 2√135 – 2√240 =

    = √4×15 + 2√9×15 – 2√16×15

    = √2²×15 + 2√3²×15 – 2√4²×15

    = 2√15 + 6√15 – 8√15

    = √15(2 + 6 – 8)

    = √15(8 – 8)

    = √15×0

    = 0

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45:7+7-4:2-5:5*4+35:2 =? ( )