2,4,6,7,8,9,10,11,12,13,15 tolong kerjakan pakai cara juga ya!ku kasih poin 85

2.
[tex]36a ^{8} b ^{3} \div 9a^{5} b ^{2} \\ = (36 \div 9)(a ^{8 - 5} )(b ^{3 - 2} ) \\ = 4a ^{3} b[/tex]

4.
[tex] - 32p^{7} q ^{8} r ^{4} \div 8pq ^{6} r \\ = ( - 32 \div 8)(p ^{7 - 1} )(q ^{8 - 6} )(r ^{4 - 1} ) \\ = - 4p ^{6} q ^{2} r ^{3} [/tex]

6.
[tex]15x ^{6} \div (24x ^{5} \div ( - 8x ^{3} )) \\ = 15x ^{6} \div ((24 \div (- 8))(x ^{5 - 3} )) \\ = 15x ^{6} \div ( - 3x ^{2} ) \\ = (15 \div ( - 3))(x ^{6 - 2} ) \\ = - 5x ^{4} [/tex]

7.
[tex]56x ^{7} y ^{6} \div ( - 4x ^{4} y ^{5} \div 2x ^{2} y ^{4} ) \\ = 56 x ^{7} y ^{6} \div ((( - 4) \div 2)(x ^{4 - 2} )(y ^{5 - 4} ) \\ = 56x ^{7} y ^{6} \div (- 2x ^{2} y) \\ = (56 \div ( - 2))(x ^{7 - 2} )(y ^{6 - 1} ) \\ = - 28x ^{5} y ^{5} [/tex]

8.
[tex]m ^{6} n ^{9} \div (m ^{4} n ^{3} \times mn ^{4} ) \\ = m ^{6} n ^{9} \div ((m ^{4 + 1} )(n ^{3 + 4} )) \\ = m ^{6} n ^{9} \div m ^{5} n ^{7 } \\ = (m ^{6 - 5} )(n ^{9 - 7} ) \\ = mn ^{2} [/tex]

9.
[tex] - m ^{8} n ^{7} \div (( - m ^{5} n ^{6}) \div ( - m ^{2} n)) \\ = - m ^{8} n ^{7} \div ((m ^{5 - 2} )( n ^{6 - 1} )) \\ = - m ^{8} n ^{7} \div ( m ^{3} n ^{5} ) \\ = ( - m ^{8 - 3} )(n ^{7 - 5} ) \\ = - m ^{5} n ^{2} [/tex]

Maaf Kalau Salah