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You guys rock. I got a 640 on my first MGMAT practice test, but I always solve the "simple" algebra w/substitution. My quant wasn't the best either. I'm "good" at math, but obviously forgot how to do 7th grade basics!
This makes so much sense now...
- by dapplegate
Mon May 10, 2010 4:31 am- Forum: Problem Solving
- Topic: HOW DOES...???
- Replies: 10
- Views: 2144
Good formula to know... that helps with the third part.dapplegate wrote:Really, if I can get this one answered, in detail, it will help resolve the entire theory behind it:
x^2-x-2=0
becomes
(x-2)(x+1)=0
Therefore, and I get this part... X could be 2 or -1.
- by dapplegate
Sun May 09, 2010 5:24 pm- Forum: Problem Solving
- Topic: HOW DOES...???
- Replies: 10
- Views: 2144
Good formula to know... that helps with the third part.dapplegate wrote:Really, if I can get this one answered, in detail, it will help resolve the entire theory behind it:
x^2-x-2=0
becomes
(x-2)(x+1)=0
Therefore, and I get this part... X could be 2 or -1.
- by dapplegate
Sun May 09, 2010 5:20 pm- Forum: Problem Solving
- Topic: HOW DOES...???
- Replies: 10
- Views: 2144
Really, if I can get this one answered, in detail, it will help resolve the entire theory behind it:
x^2-x-2=0
becomes
(x-2)(x+1)=0
Therefore, and I get this part... X could be 2 or -1.
- by dapplegate
Sun May 09, 2010 5:16 pm- Forum: Problem Solving
- Topic: HOW DOES...???
- Replies: 10
- Views: 2144
HOW DOES...???
HOW DOES?
X^2-5X-X=0
become
(X-6)(X+1)=0
AND
n^2-14n+49=0
become
(n-7)(n-7)=0
AND
(X-2)^2
become
X^2 -4X +4
- by dapplegate
Sun May 09, 2010 4:59 pm- Forum: Problem Solving
- Topic: HOW DOES...???
- Replies: 10
- Views: 2144