The first step in simplifying this expression is to identify which, if any, terms can be combined. Remember, only like terms — constant terms or terms with the same variable and the same exponent — can be combined. Let's simplify the expression first.
4x^4 - 3x^2 - 1 + 3x^4 + 6x^2
In this case, we have two x^4-terms, two x^2-terms, and one constant.
Only the x^4-termsand x^2-terms can be combined, so to simplify the expression we will rearrange them according to the Commutative Property of Addition and then combine like terms.
