Tolong jawab secepat mungkin

77.
4 x 3⁶ + 5 x 3⁶
= 3⁶(4 + 5)
= 3⁶ x 9
= 3⁶ x 3²
= 3⁸

Jawaban A

78.
25 x 3⁵ - 16 x 3⁵
= 3⁵ (25 - 16)
= 3⁵ x 9
= 3⁵ x 3²
= 3⁷

Jawaban C