Easy Algebra Step-by-Step

Computation with Real Numbers 31

Exercise 2

For 1–3, simplify.

1. − 45


2. 58
   3. − 52
   3

For 4 and 5, state in words.

4. − 9 +−()(− =− 9 + 4 5. − 9 −()(− =− 9 + 4

For 6–20, compute as indicated.

6. −+ 80 − 40
   7.^077 +−^141.


7. ⎝⎜⎛⎛⎝⎝⎛− ⎞⎠⎟⎞⎞⎠⎠⎛⎛⎛⎝⎝⎝⎜ ⎞⎠⎟⎞⎞⎠⎠

5

6

2

5

9.

18

− 3

10. ()− ()−
    11.^1
    2

()^400 ⎛⎝⎜⎛⎛⎝⎝ ⎞⎠⎟⎞⎞⎠⎠

12.

−

−

11

3

1

3

13. −− 450. (^9595) ()(−

14.^3
11

5

11

−−⎛⎛⎝⎝⎛⎝ ⎞⎠⎟⎞⎞⎠⎠

15.

08

− 001

16. −+^4580


17. 41
    2

33

5

5

17

⎛

⎝⎜

⎛⎛

⎝⎝

⎞

⎠⎟

⎞⎞

⎠⎠

⎛−

⎝⎜

⎛⎛

⎝⎝

⎞

⎠⎟

⎞⎞

⎠⎠()

(^0) () 999 ⎛−
⎝⎜
⎛⎛
⎝⎝
⎞
⎠⎟
⎞⎞
⎠⎠

18.^0
875

19.

700

0

20. ()− ())()()− 1 ()(− ()− )(()()−