Hello, dear friend, you can consult us at any time if you have any questions, add WeChat: daixieit

MATH-UA-009 — Algebra, Trigonometry and Functions

Homework Assignment #2

2022

1. Find the sum or difference and simplify.

 

(a)  (3 points)                      +

(b)  (3 points) 2t2 + 13t + 20 t2 + 7t + 12

 

2.  (3 points) Simplify the following compound fraction. 1 +

 

3. If two electrical resistors with resistances R1  and R2  are connected in parallel, then their total resistance R is given by

1

R =   1        1

R1  + R2

(a)  (2 points) Simplify the expression for R

 

(b)  (1 point) If R1  = 10 ohms and R2  = 20 ohms, what is the total resistance

R?


 

4.  (3 points) Rationalize the denominator and simplify, if possible.

x

^x2 + 1 + 1

 

5.  Solve for the specified variable.

mM

(a)  (2 points) F = G         for m.

 

 

(b)  (2 points) Solve y =             for x.

 

 

(c)  (2 points) Solve y =  for x.


 

6.  Solve the following quadratic equations by factoring, if possible, or using the quadratic formula. If no real solutions exist write no real solutions” .

(a)  (4 points) 6x(x 1) = 21 x

 

(b)  (4 points) x2 + 3x = 9

 

(c)  (3 points) 3x2 + 4x + 3 = 0

 

7.  (4 points) Solve the following quadratic equation by completing the square. 8x − 2x2  = 1


8.  Solve the following rational equations for x.

x  12       x + 4

x       x + 7

 

 

(b)  (4 points)  +  =