0 votes
2.6k views
in Mathematics Form 3 by
  1. Expand (1-2x)6 up to term in x3 
  2. Use the expansion above to evaluate (1.02)6 correct to 4 decimal places.

1 Answer

0 votes
by
  1. 1+ 6(2x)1 + 15 (2x)2 + 20(2x)3
    1+12x + 60x2 +160 x3
     
  2. 1-2x = 0.98
    -2x=0.98-1=-0.02
    or 1-0.98=2x
    2x=0.02
    x=0.01 
    1+12(0.01 ) + 60(0.01)2+160 (0.01)3
    1+ 0.12+0.006 + 0.00016
    =1.1262(4 d.p)
Welcome to EasyElimu Questions and Answers, where you can ask questions and receive answers from other members of the community.

6.4k questions

9.6k answers

6 comments

590 users

...