Question

1. Dik : 3log 2 = p
3log 5 = q
Dit : 3log 250 ...???

2. 7log 21 - 7log 3 + 7log 35 - 7log5 =

Answer 1

1. 3log250
= 3log(2 × 125)
= 3log2 + 3log125
= 3log2 + 3log5^3
= 3log2 + 3. 3log5
= p + 3q

2. 7log21 - 7log3 + 7log35 - 7log5
= 7log(21/3) + 7log(35/5)
= 7log7 + 7log7
= 1 + 1
= 2

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