Question:

Some help with Multiplying Radicals please?

by Guest60408  |  earlier

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16: 2(3 sqrt 2-5 sqrt 2

17: 5 sqrt 2( sqrt 8- sqrt 50)

18: (sqrt 2 - sqrt 3) (sqrt 2 + sqrt 3)

19: (sqrt 5- sqrt 2) (sqrt 5 + sqrt 2)

20: (sqrt 3-2)^2

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  1. 16: 2(3√2 - 5√2) = - 4√2

    17: (5√2)(√8 -√50) = 5√16 - 5√100 = 20 - 50 = - 30

    18: (√2 - √3) (√2 + √3) = 2 - 3 = - 1

    19: (√5 - √2) (√5 + √2) = 5 - 2 = 3

    20: (√3 - 2)^2 = 3 - 4√3 + 4 = 7 - √3

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