Soal Logaritma.. Bantu yah yg bisa jawab .

jawab

x² -y² = (x+y)(x-y)

(⁴log² 40 - ⁴log² 2)/(⁴log 80)
= (⁴log 40 + ⁴log 2)(⁴log 40 - ⁴log 2) / (⁴log 80)
= (⁴log 80)(⁴log 20) / ⁴log 80
= ⁴log 20
= ⁴log 4 + ⁴log 5
= 1 + a