2.3

3: This is NOT x² + 8²!

10: Don’t forget to square the coefficients 6 and -3.

11: Multiply (x + 4) by (x + 4).

14: This is the same idea as #11.

15: The middle term will be 7t – 7t.

22: Like in the previous problem, the middle term will cancel out.

31: This is a power applied to two separate terms individually.

37: For two binomials to multiply together into a binomial, they must be conjugates of each other so that the middle term cancels.

39: These are conjugates of each other, so there will be no middle term in the answer.

42: This is a more complicated version of the previous problem.