(4b^4+2) - (7b^2-5) - (6b^4-2b^2)

Question

How do you exactly solve/simplify this? I get confused with the signs when it comes to adding/subtracting terms like these. Thanks much!

Answer 1

Remember two rules.
1. Remove parentheses, changing the signs inside the parentheses IF the outside side is negative but not changing if the outside sign is +.
2. Combine like terms.

(4b^4+2) - (7b^2-5) - (6b^4-2b^2)

4b^4+2-7b^2+5-6b^4+2b^2=
Now just add like terms and go from there if it can be simplified further.