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Mathematics 14 Online
OpenStudy (anonymous):

How do i factor these

OpenStudy (anonymous):

\[\frac{ 3t^2+5t+2 }{ 4t^2-4t+1 }\]

OpenStudy (tkhunny):

One at a time? Numerator (3t + ____)(t + ____) Denominator ()()

OpenStudy (gitface):

Similar to factoring any quadratic. The twist here is you can factor them by doing what my math teacher called "factoring by grouping". The quadratic is in the form ax^2+bx+c. Multiply a and c. For the denominator this is 6. Then you can continue normally. Two numbers that multiply to +6 and add to +5. This one's easy, the numbers are 3 and 2. You can then put this into the quadratic like so;\[3t ^{2} + 3t + 2t + 2\] You can see that the 3t and 2t add to 5t, so the eqaution still maintains the same value. Then you can group like terms. |dw:1352949619373:dw| You can see that the factors in the brackets are the same, so you've grouped correctly. Then you just factor the like terms. This leaves \[(3t + 2)(t+1)\] Do the same for the denominator, then cancel the facotrs out if at all possible.

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