Question

How do the expressions 5f²-2e and 6(e f)f compare when e = 7 and f = 2?

Answer 1

When e = 7 and f = 2, the expression 5f²-2e equals 6 and the expression 6(e f)f equals 84.

Step-by-step explanation:

To compare the expressions 5f²-2e and 6(e f)f when e = 7 and f = 2, we simply substitute these values into the expressions:

For 5f²-2e:

1. 
   
2. Replace f with 2:
3. 
   
5. 5(2)² - 2e = 5(4) - 2(7)
6. 
   
7. Simplify the expression:
8. 
   
10. 20 - 14 = 6

For 6(e f)f:

1. 
   
2. Replace e with 7 and f with 2:
3. 
   
5. 6(7)(2) = 84

Therefore, when e = 7 and f = 2, the expression 5f²-2e equals 6 and the expression 6(e f)f equals 84.