Apr 08, 2014 · How to compute the sum of the squares of all... Learn more about addition MATLAB So far, we have two examples of squaring a sum of two terms, one from constructing an area model and one from algebraic calculations: (x + 3) 2 = x 2 + 6 x + 9 (x + 5) 2 = x 2 + 10 x + 25 In both cases, the first term is squared to get the first term of the product. Intermediate Algebra Skill Factoring the Difference of Squares Factor each completely. 1) 9 x2 − 1 2) 4n2 − 49 3) 36k2 − 1 4) p2 − 36 5) 2x2 − 18 6) 196n2 − 144

Exercise 3. Expand the following expression, writing your answer in its simplest form. Be careful of notation and do not use spaces in your answer. ...