Anna’s Algebra crossword

12345678
Across
  1. 2. about finding the unknown
  2. 5. of sums expresses it as a sum of products
  3. 6. when the order does not matter
  4. 7. product of sums expresses it as a sum of products
  5. 8. lets you multiply a sum by multiplying each addend separately and then add the products
Down
  1. 1. a quantity representing the power to which a given number
  2. 3. is a sentence with a minimum of two numbers and at least one math
  3. 4. is the reverse of expanding brackets