Hitunglah nilai dari log² 20 – log² 5 per log 4​

•

(log² 20 – log² 5) / log 4

= (log 20 + log 5)(log 20 – log 5) / log 4

= log (20×5) . log (20/5) / log 4

= log 10²

= 2 ✔