Answer:
Step-by-step explanation:
Remove parenthesis
Multiply
3x²+x-5
= 3(xx)+x-5
According to the rule, when bases are same powers are to be added.
= 3(x¹x¹)+x-5
= 3(x¹⁺¹)+x-5
= 3x²+x-5
19,807
Answer: 1,000
The height of 10 stacks of books would be a 1,000 because if it's 0.3 thick between covers of 200 sheets then 10 books would be a 1,000.