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Mathematics 15 Online
OpenStudy (anonymous):

2x^2-x=1

OpenStudy (cj49):

2x^2-x-1=0

OpenStudy (kirbykirby):

\(2x^2-x-1=0\) \(2x^2-2x+x-1=0\) \(2x(x-1)+(x-1)=0\) \((x-1)(2x+1)=0\) \(x-1=0\) or \(2x+1=0\) \(x=1\) or \(x=-1/2\)

OpenStudy (cj49):

\[-b \pm \sqrt{b ^{2}-4ac}/2a\]

OpenStudy (cj49):

a=2,b=-1 and c=-1

OpenStudy (anonymous):

So right now you have\[2x^2 - x = 1\] Step 1 : \[2x^2\] = x + 1 Step 2: x (2x - 1) = 1 Step 3 : \[2x^2\] - x - 1 = 0 Do you see that it's simplifying ? Your answer or solution would be x = \[\frac{ -1 }{ 2 }\] Answer X=1 Hope this helped!

OpenStudy (anonymous):

I see it now thank you guys so much

OpenStudy (anonymous):

it took me a second but I get it now :) @holly01, @kirbykirby

OpenStudy (kirbykirby):

=]

OpenStudy (anonymous):

I have a few more if that's alright @kirbykirby

OpenStudy (kirbykirby):

sure

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