Question: 6 completely factor the expression 7x2 28 7 solve...

6) Completely factor the expression.

7x² − 28

7) Solve the equation and check your solution. (If an answer does not exist, enter DNE. If all real numbers are solutions, enter REALS.)

9x − 5 = 8x + 9

8 ) Solve the equation and check your solution. (If an answer does not exist, enter DNE. If all real numbers are solutions, enter REALS.)

3x

8

−

4x

3

= 4

9) Solve the equation and check your solution. (If there is no solution, enter NO SOLUTION.)

5x − 5

5x + 2

=

5

6