Since xy is common in both terms, you can factor that out leaving you with xy(4^2-1)
17. Subtraction. According to the order of operations, he should've done the exponent of 3 first.
18. He then did 15×2. According to the order of operations, he should've done the multiplication of 8×2, since, if there are only multiplication and/or division left, you work left to right. He isn't correct.
19. 16, I think, I did it in my head.
Answer: the 3 and 2 first then 40 divided by 8 then 8x2 then you can put the rest in whatever order i used pemdas I think it should be correct
Step-by-step explanation:pemdas
Answer:
2.8 i think
Step-by-step explanation:
