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28 July, 20:02

Expressed as the product of prime factors,

198 = 2 x 32 x 11 and 90 = 2 x 32 x 5.

Use these results to find

(a) the smallest integer, k, such that 198k is a perfect

square,

+5
Answers (1)
  1. 28 July, 20:26
    0
    22

    Step-by-step explanation:

    198 = 2*3*3*11

    For a perfect square, factors have to occur in pairs

    198*2*11 (because 3 is already twice)

    198*2*11

    198*22

    198k = 198*22

    k = 22
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