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Topic: help with algebra/combination?
Replies: 1   Last Post: Sep 2, 2008 6:03 AM

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eggplanttop

Posts: 1
From: Jakarta
Registered: 9/1/08
help with algebra/combination?
Posted: Sep 1, 2008 6:18 AM
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numbers in ^^ are powers. eg. 2^6-x is two to the power of six minus x.

simplify: 2^(n+2) times 6^(n-4) over (12)^(n-1)

solve for x
2(9)^(2x-1) - 5(3)^(2x) + 18 = 0

solve for x
2(25)^(x+1) + 5^(x+2) - 3 = 0

solve for x and y
5^(x-2y+1) = 25^(x-2y) and 4^(x-y+2) = 32^(x-2y+1)

find the coefficient of x^5 in the expansion of (2x+3)(x-2)^6

thanks, if u only want to answer one question that is still GREAT. i jst totally failed my test and really need to know the answers to what i did wrong, cause theres a remed this week. thanks!!


Message was edited by: eggplanttop



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