Answer both 7&8

7. Multiply the following polynomials, combine like terms and write your answer with powers in decreasing order. a. (2d + 3)2 in. (SC 4)2 8. Multiply the following polynomials, combine like terms and write your answer in descending powers. a. (r + 7)(r 7) in. (4a 3b)(4o + 3b) c. Looking back at parts (a) and (b), after multiplying, what happens to the two middle terms? \"Note that you just performed these special multiplications! The Square of a Binomial (a+b)2=oz+2ab+b2 (oi1:02=aZ2ab+b2 The Product of the Sum and Difference of Two Terms (c:1+b)(r1:I)=r12b2