SOLUTION: It is very confusing to me. There is a problem on the second page of chapter 7 that is very hard for me to solve. The problem is: 3(20+4)/2(9)-4^2 (this is in fraction.) afte

Algebra ->  Expressions-with-variables -> SOLUTION: It is very confusing to me. There is a problem on the second page of chapter 7 that is very hard for me to solve. The problem is: 3(20+4)/2(9)-4^2 (this is in fraction.) afte      Log On


   

Question 147717This question is from textbook Algebra DeMYSTiFieD
: It is very confusing to me. There is a problem on the second page of chapter 7 that is very hard for me to solve.
The problem is:
3(20+4)/2(9)-4^2 (this is in fraction.) after that it is 3 √5(8)+41/12-3(16-13)(also in fractions.)
any help greatly appreciated. This question is from textbook Algebra DeMYSTiFieD

Answer by mangopeeler07(462) About Me  (Show Source):
You can put this solution on YOUR website!
3%2820%2B4%29%2F%282%289%29-4%5E2%29 Distribute and get %2860%2B12%29%2F%2818-4%5E2%29. Simplify 4 squared and get %2860%2B12%29%2F%2818-16%29. Then simplify that to 72%2F2 or simply 36. And you're done.



3sqrt%285%29%288%29%2B41%2F%2812-3%2816-13%29%29 First simplify 3sqrt%285%29%288%29 to 24sqrt%285%29. Then simplify 12-3%2816-13%29 to 12-3%283%29 and then 12-9. or 3. So you get 24sqrt%285%29+%2B+41%2F3. And you're done.