# help maths

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17 years ago
#1
60 1060 990=--------------------+--------------------- (1+a) (1+a)(1+a) a=? pls calculate step by
step THANKS

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Posted via news://freenews.netfront.net Complaints to [email protected]
1
17 years ago
#2
"fsaf" <[email protected]> wrote:

[q1]> 60 1060 990=--------------------+--------------------- (1+a) (1+a)(1+a) a=? pls[/q1]
[q1]> calculate step by step[/q1]

What have you tried so far?

Clue: if you perform the same operation on each size, the equation will still be valid. So, for
example, you can divide each side by 10, to get:

6 106 99 = ------------------ + --------------------- (1+a) (1+a)(1+a)

Gareth
0
17 years ago
#3
(1+a)(1+a)*990=(1+a)(1+a)*60/(1+a)+(1+a)(1+a)*1060/(1+a)(1+a)=> (1+2a+a^2)*990=(1+a)*60+1060=>
990a^2+1980a+990=60a+60+1060=> 990a^2+1920a-130=0 solve this qtr

tilemachos

Ï fsaf <[email protected]> Ýãñáøå óôï ìÞíõìá óõæÞôçóçò: [email protected] t...
[q1]> 60 1060 990=--------------------+--------------------- (1+a) (1+a)(1+a) a=? pls[/q1]
[q1]> calculate step by step THANKS[/q1]
[q1]>[/q1]
[q1]>[/q1]
[q1]> ---[/q1]
[q1]> Posted via news://freenews.netfront.net Complaints to [email protected][/q1]
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