SOLUTION: Factor {{{ -3x^2+21x^-5 }}}

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Question 1121560: Factor
+-3x%5E2%2B21x%5E-5+
Found 2 solutions by josgarithmetic, greenestamps:
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
The different x exponents are for different terms.

21x%5E%28-5%29-3x%5E2
3%287x%5E%28-5%29-x%5E2%29

Answer by greenestamps(13198) About Me  (Show Source):
You can put this solution on YOUR website!


There is no one "right" way to factor an expression like this....

-3x%5E2%2B21x%5E%28-5%29 = ...

-3%28x%5E2-7x%5E%28-5%29%29 or
3%28-x%5E2%2B7x%5E%28-5%29%29 or
-3x%5E%28-5%29%28x%5E7-7%29 or
3x%5E2%28-1%2B7x%5E%28-7%29%29 or
...

If you were ever to run into a real problem where you had to factor an expression like this, the context of the problem might tell you what factorization would help you the most....