Processing Math: Done
Solution 2.1:2b
From Förberedande kurs i matematik 1
(Difference between revisions)
m (Robot: Automated text replacement (-[[Bild: +[[Image:)) |
|||
Line 1: | Line 1: | ||
{{NAVCONTENT_START}} | {{NAVCONTENT_START}} | ||
- | <!--center> [[ | + | <!--center> [[Image:2_1_2b.gif]] </center--> |
We expand the first product of bracketed terms by multiplying each term inside the first bracket by each term from the second bracket | We expand the first product of bracketed terms by multiplying each term inside the first bracket by each term from the second bracket | ||
Revision as of 06:33, 21 August 2008
We expand the first product of bracketed terms by multiplying each term inside the first bracket by each term from the second bracket
1+1
15x−5x
1−5x
15x=1+15x−5x−75x2
As for the second expression, we can use the conjugate rule
22−(5x)2
=3(4−25x2)=12−75x2
All together, we obtain