Quiz 12  AU13

Problem 0. WARM UP FROM SECTION 5.7:
(a) A number x is 30  less than its square x². Translate.  
(b) Manipulate and solve the equation for both values of x in  the previous part. See section 5.6 and the rule saying   A*B = 0 then A = 0 or B = 0.

6.3

Problem 1.   (a) Find the LCM of  3x⁴   and    9x²            (b) Find the LCM of  15x⁴y⁷  and 25x³y⁹

6.4

Problem 2.    Add . 

Problem 3.  Add .    HINT: LOOK ABOVE  YO ON THIS TEST SHEET.

(a)

(b)

 6.5

Problem 4.   Simplify. 
        

Problem 5.  Simplify.

Problem 6.   Simplify.

Problem 7. Simplify.
        

Problem 8. Simplify.

Problem 9.   Simplify.

Sec. 6.6

Problem 10.  Solve.

Problem 11.  Solve.
 

Problem 12. Solve.