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Verified answer
1) 6 ( - 3a - 4b ) + ( 4a - 6b )= - 18a - 24b + 4a - 6b
= - 14a - 30b
2)( - 6a - 3b - 9) + ( 4a + b + 3)
= - 6a + 4a - 3b + b - 9 + 3
= - 2a - 2b - 6
3) 81a² = ( 9a )( 9a )
4) 4p + 3a
= 4(3a ) + 3(4b)
= 12a + 12b
= 12(a + b )
= -18a - 24b + 24a - 36b
= -18 a + 24a - 24b - 36b
= 6a - 60b
2) (-6a - 3b - 9) + (4a + b + 3)
= -6a + 4a - 3b + b - 9 + 3
= -2a - 2b - 6
3) 81a² = (9a) x (9a)
4) p = 3a, a = 4b.
= 4p + 3a
= 4 (3a) + 3 (4b)
= 12a + 12b
Maaf kalau salah:)
Semoga membantu:D