Posted by Trisan on Sunday, October 18, 2009 at 11:02pm.
4s raised to the negative 2 power - (4t)raised to the -2 power
- Algebra 2 URGENT - Reiny, Sunday, October 18, 2009 at 11:35pm
4s^2 - (4t)^-2
what about it?
Are we factoring?
If so, I see the difference of squares
- Algebra 2 URGENT - Trisan, Sunday, October 18, 2009 at 11:41pm
No the question only says to simplify and the problem was 4s^-2-(4t)^-2
- Algebra 2 URGENT - Reiny, Sunday, October 18, 2009 at 11:55pm
sorry, did not see that first -2
ok, factoring is simplifying
or you could so this
4/s^2 - 1/(16t^2)
= (64t^2 - s^2)/(16s^2t^2)
my revised solution for the above:
4s^-2 - 16t^-2
= 4(s^-1 + 2t^-1)(s^-1 - 2t^-1)
= 4(1/s + 2/t)(1/s - 2/t)
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