Question

Simplify. (3x3 - 7x2 + 12) - (3x3 + 6x2 + 10x)

Answer 1

The answer is B. 

Do you need the explanation?


 (3x^3 - 7x^2 + 12) - (3x^3 + 6x^2 + 10x)
First, remove parentheses


3x^3 - 7x^2 + 12 - 3x^3 -6x^2 -10x
eliminate the opposites 

then collect the like terms 
13x^2 +12 - 10x

and finally, use the commutative property to reorder the terms, and you'll get 
-13x^2-10x+12