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Equation
Source: Beat The GMAT — Problem Solving |
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Geva@EconomistGMAT
- GMAT Instructor
- Posts: 905
- Thanked: 378 times
- GMAT Score:760
What does the root mean, in this equation? Is this a typo?
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Geva@EconomistGMAT
- GMAT Instructor
- Posts: 905
- Thanked: 378 times
- GMAT Score:760
*shrug*N:Dure wrote:This is the original question
Can you scan it?
Or use MS equation? It's included in word.
I tried to solve for what you wrote but it does not work for any of the answer choices. You'd end up with an equation of the form: ax³+bx²+cx+d=0, which is very uncommon on the GMAT.
Or use MS equation? It's included in word.
I tried to solve for what you wrote but it does not work for any of the answer choices. You'd end up with an equation of the form: ax³+bx²+cx+d=0, which is very uncommon on the GMAT.
The image is in the 3rd post.
The source is Nova Math Bible
I also tried squaring both sides but to no use. Maybe it's just a wrong question
The source is Nova Math Bible
I also tried squaring both sides but to no use. Maybe it's just a wrong question
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Geva@EconomistGMAT
- GMAT Instructor
- Posts: 905
- Thanked: 378 times
- GMAT Score:760
No image/attachment here, or in the third one.N:Dure wrote:Here's the OA, which I don't get either. Can someone pls explain the 3rd step?
hmm it's showing in your post.... maybe cause I'm logged in the forum I'm linking from. you have to be a member to see the images.
Both are attached now
Both are attached now
- Attachments
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this is insane!N:Dure wrote:hmm it's showing in your post.... maybe cause I'm logged in the forum I'm linking from. you have to be a member to see the images.
Both are attached now
how come (x+5)*V(1/x+1/5)=(x+5)(5x/(x+5)????
(1/x+1/5) is in a squroot, how come it suddenly be equal to 5x/(x+5)???????
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anshumishra
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- Posts: 543
- Thanked: 147 times
I agree....it is insanediebeatsthegmat wrote:this is insane!N:Dure wrote:hmm it's showing in your post.... maybe cause I'm logged in the forum I'm linking from. you have to be a member to see the images.
Both are attached now
how come (x+5)*V(1/x+1/5)=(x+5)(5x/(x+5)????
(1/x+1/5) is in a squroot, how come it suddenly be equal to 5x/(x+5)???????
