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13 January, 03:30

Simplify.

(5sqrt2-1) ^2

+2
Answers (1)
  1. 13 January, 05:01
    0
    51 - 10sqrt (2)

    Step-by-step explanation:

    (5sqrt2-1) ^2

    We need to FOIL

    (5sqrt2-1) (5sqrt2-1)

    first: (5sqrt2*5sqrt2) = 25 sqrt (2) ^2 = 25 * 2 = 50

    outer: - 1 (5sqrt2) = - 5sqrt (2)

    inner:-1 (5sqrt2) = - 5sqrt (2)

    last: - 1*-1 = 1

    Add these together

    50 - 5sqrt (2) - 5sqrt (2) + 1

    51 - 10sqrt (2)
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