3 / 4 = 15:20 = 18:24 = 27 / 36 = ()

3 / 4 = 15:20 = 18:24 = 27 / 36 = (0.75)
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Find the quadratic radical math problem. 1. √ 125 - √ 1 / 125 - √ 16 / 5 = 2. (√ 18 - √ 27) △ 6 + 8 √ 1 / 2

1.√125 - √1/125 - √16 /5
=5√5-1/25√5-4/5√5
=√5(5-1/25-4/5)
=(104/25)√5
2.（√18 - √ 27 )÷√6 ＋ 8√1/2
=√3-3/2√2+4√2
=√3+(5/2)√2

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