22: Add w times w, w times 6, 9 times w, and 9 times 6.
32: The area of a triangle is its base times its height times ½.
37: Multiply each term in the second polynomial by y, and also multiply each by 3.
45: What will determine what the highest exponent will be?
50: Multiply two of the dimensions together, and then multiply by the third.
58: Flip the fraction, and square everything in it.