Niech log₄a=3.Oblicz wartość wyrażenia log₄16a²

log₄ a = 3 log₄16a² = = log₄ (16 * a * a) = = log₄ (4 * 4 * a * a) = = log₄ 4 + log₄ 4 + log₄ a + log₄ a = = 1 + 1 + 3 + 3 = 8