# Math Lab HW

*label*Mathematics

*timer*Asked: Nov 29th, 2017

*account_balance_wallet*$10

**Question description**

Please show all work for full credit and box final solutions. Leave all answers in exact form

â€“

## Tutor Answer

Attached are the solutions. Please let me know if you have any questions about them or if there is anything else I can help with.

Lab VI Rationals

1. Set the denominator equal to zero and solve for x. Those will be the values that make a rational

function undefined.

2

x âˆ’9=0

x 2=9

x=Â±âˆš 9

x=Â±3

The function is undefined when x = 3 or x = -3

2. To simplify factor numerator and denominator completely. Then remove terms that appear in

both numerator and denominator.

a.

2

x âˆ’5x

25x

x ( xâˆ’5)

25x

xâˆ’5

25

b.

2

x âˆ’1

2

x âˆ’3x+ 2

( xâˆ’1)( x+ 1)

( xâˆ’1)(xâˆ’2)

x+ 1

xâˆ’2

3. Simplify by factoring. Remember that dividing by a fraction is the same as multiplying by the

reciprocal. Remove the common factors that appear in both numerator and denominator.

a.

2x+ 5

xâˆ’1

â‹…

x + 4xâˆ’5 4x...

*flag*Report DMCA

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors