Exercise 15 Page 77

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. 14k^2 -( - 2k^2 ) To simplify the expression we can combine k^2-terms.

14k^2-(- 2k^2)

SubNeg

a-(- b)=a+b

14k^2+2k^2

FactorOut

Factor out k^2

(14+2)k^2

AddTerms

Add terms

16k^2