Simplify the polynomial
Step 3: The leading coefficient of the simplified polynomial is the coefficient of the term with the highest degree, which is 5 in this case.
Step 1 :Step 1: Combine like terms, which means add together the coefficients of the same degree of x. So,
Step 2 :Step 2: After combining like terms, the polynomial becomes
Step 3 :Step 3: The leading coefficient of the simplified polynomial is the coefficient of the term with the highest degree, which is 5 in this case.