Algebra Know-It-ALL

710 Worked-Out Solutions to Exercises: Chapters 21 to 29

Figure C-5 Illustration for the solution

to Prob. 4 in Chap. 28.

x

y

No real

solutions

Table C-3. Solution to Prob. 3 in Chap. 28.

x − 3 x+ 1 2 x^2 − 3 x+ 3

−3 10 30

−2 7 17

−1 4 8

0 1 3

1 −2 2

2 −5 5

3 −8 12

4 −11 23

Table C-4. Solution to Prob. 5 in Chap. 28.

xx^2 +x+ 1 x^2 − 2 x− 2

−4 13 22

−3 7 13

−2 3 6

−1 1 1

0 1 − 2

1 3 − 3

2 7 − 2

3 13 1

4 21 6