454 algebra De mystif ieD
DeMYSTiFieD / algebra DeMYSTiFieD / gibilisco / 000-0 / appendix
- 2
12
3
(^2216)
x
xx−− x
−
A.^2512
34
2
2
xx
xx
−+
()+−()
B.^2712
34
2
2
xx
xx
−+
()+−()
C.
2119
344
xx^2
xxx
++
()+−()()+
D. 2911
344
xx^2
xxx
++
()+−()()+
The division problem 32 .. (^81) )0 574 can be rewritten as
A. 3280 10 574) , B. 328 10 574) , C. 328 105 740) , D. (^3280) )1 057 400,,
Completely factor 25 xx^32 +− 82 x− 0.
A. ()xx^2 −+^42 ()^5 B. ()xx−+^22 ()()^25 x− C. ()xx−+^22 ()()^25 x+
D. 25 xx^32 +− 82 x− 0 cannot be factored.
The difference of two positive numbers is 3 and their product is 340.
What is the smaller number?
A. 16 B. 17 C. 18 D. 19
20 xx^32 −+^15 xx^5 xx=
A. −−^54 xx()xx^2 −−^3 B. −−^54 xx()xx^2 ++^3
C. −−^54 xx()xx^23 + D. −−^54 xx()xx^2 +−^3
A retired teacher wants to invest an inheritance worth $160,000 in two
separate investments: a municipal bond, paying 3% annual interest, and
a corporate bond, paying 412 % annual interest. If she wants an annual
income from these investments to total $5775, how much should she
invest in the corporate CD?
A. $65,000 B. $70,000 C. $75,000 D. $80,000
1
5 x^2
=
A.^1
5
x^2 B. −^1
5
x^2 C. 1
5
2
x
−
D. 1
5
x−^2
- −− 12 xx^242 += 0
A. −− 43 ()xx^2 − 5 B. −+ 43 ()xx^2 + 5 C. −+ 43 ()xx^2 − 5
D. −− 43 ()xx^2 + 5