Francis G.

Feb.4, 2002

 

Computer Problem

                                Problem: 4+15-3²-2x4

 (3x3)

            4+15-9-2x4

                       (2x4)

              4+15-9-8

             (4+15)

                19-9-8

               (19-9)

                  10-8

                     2

 

 

Always do parentheses first. The next after parentheses is exponents, then multiplication, division, addition, and last subtraction.

          First I did the exponent 32, and got 9. Then write the entire problem again but change the exponent to 9. Write the entire problem down and switch the numbers with the answers. Then I multiplied 2 times 4 and got 8. Then I added 4 plus 15 and got 19. Then I did 19 minus 9 and got 10. Then I did 10-8 and got 2. 2 is my answer.