Question

1. 8-4 (2X + 5) =
2. (9×-6)-(5X-3) =
3. 6a (3a²+7b) =
4. 2a-(-4b)+3c =

Answer 1

nomer 1
= 8 - 4 (2x + 5)
= 8 -8x - 20
= -8x - 12

nomer 2
= (9× -6)-(5x -3)
= 9x -6 -5x + 3
= 4x - 3

nomer 3
= 6a (3a²+7b)
= 18a³ + 42ab

nomer 4
= 2a-(-4b)+3c
= 2a + 4b + 3c