k) m^0 +m^1 = 0 l)t

(^12)
3 t
(^14)

• 2 = 0
  m) 3 p+ 3p+ 3p= 27 n) k^1 7 k
  (^12)
  18 = 0
  o) x
  (^12)


• 3x
  (^14)
  18 = 0 p)
  16 x 1
  42 x+ 1

= 3

q)(2x8)(3x9) = 0 r)(6x36)(16 4 x) = 0

s) 5 : 2 x

(^2) +1
= 20 t) 27 x^2 = 9^2 x+1
u)
8 x 1
2 x 1
= 7 v)
35 x
5 x

=

1

7

w)

a^3 x: a

(^1) x
a^4
= 1 x) 2 x
(^12)

• 1 =x
  4.Use trial and error to find the value ofxcorrect to 2 decimal places
  4 x= 44
  5.Use trial and error to find the value ofxcorrect to 2 decimal places
  3 x= 30
  6.Explain why the following statements are false:
  a)

1

a^1 +b^1

=a+b

b)(a+b)^2 =a^2 +b^2

c)

( 1

a^2

)^13

=a

2

3

d) 2 : 3 x= 6x

e)x

(^12)

1

x

(^12)
f)(3x^4 y^2 )^3 = 3x^12 y^6
7.If 22013 : 52015 is written out in full how many digits will there be?
8.Prove that
2 n+1+ 2n
2 n 2 n^1

=

3 n+1+ 3n

3 n 3 n^1

For more exercises, visit http://www.everythingmaths.co.za and click on ’Practise Maths’.

1a.2F45 1b.2F46 1c.2F47 1d.2F48 1e.2F49 1f.2F4B

1g.2F4C 1h.2F4D 1i.2F4F 1j.2F4G 1k.2F4H 1l.2F4J

1m.2F4K 1n.2F4M 1o.2F4N 1p.2F4P 1q.2F4Q 1r.2F4R

1s.2F4S 1t.2F4T 1u.2F4V 1v.2F4W 1w.2F4X 1x.2F4Y

1y.2F4Z 1z.2F52 2a.2F53 2b.2F54 2c.2F55 2d.2F56

2e.2F57 2f.2F58 2g.2F59 2h.2F5B 2i.2F5C 2j.2F5D

2k.2F5F 2l.2F5G 2m.2F5H 2n.2F5J 2o.2F5K 2p.2F5M

2q.2F5N 2r.2F5P 2s.2F5Q 3a.2F5R 3b.2F5S 3c.2F5T

3d.2F5V 3e.2F5W 3f.2F5X 3g.2F5Y 3h.2F5Z 3i.2F62

3j.2F63 3k.2F64 3l.2F65 3m.2F66 3n.2F67 3o.2F68

3p.2F69 3q.2F6B 3r.2F6C 3s.2F6D 3t.2F6F 3u.2F6G

3v.2F6H 3w.2F6J 3x.2F6K 4.2F6M 5.2F6N 6a.2F6P

6b.2F6Q 6c.2F6R 6d.2F6S 6e.2F6T 6f.2F6V 7.2F6W

8.2F6X

http://www.everythingmaths.co.za m.everythingmaths.co.za

58 2.5. Summary