Algebra Demystified 2nd Ed

178 algebra De mystif ieD

eMystiFied / algebra deMystiFied / gibilisco / 000-0 / Chapter 6

7. −−^10 xx^3261 yx+=^0
   a. −+ 25 xx()^235 xy−
   b. −− 25 xx()^2235 xy+
   C. −− 25 xx()^235 xy−
   d. −+ 25 xx()^2235 xy+


8. x^21
   −= 16

a. x−







1

4

2

b. xx−







 +







1

4

1

4

C.^1

2

1

2

1

xx− 2







 +









d.^1

2

1

2

2

x−







9. 81 x^2 −= 4
   a. () 92 xx−+() 92
   b. ()92x−^2
   C. 23 ()x− 12
   d. () 32 xx−+() 32


10. 69 xy^32 −x =

a. 23 xy−^1

b. 29 xy^1 −

C. 23 xy 2 x−

d. 32 yx−−^1