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Nyatakan dalam bentuk p dan q7log x²y = p
=> 7 log x + 7 log x + 7log y = p
7 log x + 7 log xy = p
7log xy² = q
=> 7log x + 7 log y² = q
2(7 log y) + 7log x = q
7 log y + 7log xy = q
7 log x + 7 log xy = p
7 log y + 7log xy = q
———————————— +
7log xy + 2(7 log (xy)²) = p+q
7 log xy + 3(7 log xy) + 7 log xy = p+q
7log(xy)² + 3(7log xy ) = p+q
5(7log xy) = p+q
7 log xy = p+q / 5
maka
7log^3√xy
= 7 log (xy)^1/3
= 1/3 (7log xy)
= 1/3 (p+q)/5
= (p+q)/15