Quadratic equations: solve these please?

Quadratic equations and inequalities, variation equations, function notation, systems of equations, etc.
famegfx
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Quadratic equations: solve these please?

Postby famegfx » Fri Apr 18, 2014 9:01 pm

Quadratic equations: solve these please?

3/x - 4/x+1 = 1

x - x/x+1 = 2

(x+2/x)^2 -7(x+2/x) +12 = 0

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little_dragon
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Re: Quadratic equations: solve these please?

Postby little_dragon » Sat Apr 19, 2014 12:24 am

famegfx wrote:Quadratic equations: solve these please?

cant do it 4 U (dont want 2 get banned!): viewtopic.php?f=21&t=6

famegfx wrote:3/x - 4/x+1 = 1

not a quad! is this 3/x-4/(x+1)=1?
then times by x(x+1): 3(x+1)-4(x)=1x(x+1)
times it out & plug into quad formula: http://www.purplemath.com/modules/quadform.htm

famegfx wrote:x - x/x+1 = 2

not a quad: is this x-x/(x+1)=2?
then time thru by x+1: x(x+1)-x=2(x+1)
times out & solve like last prob

famegfx wrote:(x+2/x)^2 -7(x+2/x) +12 = 0

this is like "weird case" here: http://www.purplemath.com/modules/factquad4.htm
do X^2-7X+12=0
then do X=(x+2/x)=(whatever ans U got)
solve for x

rite back if Ur stuck
thnx


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