Posted by Amelie on Tuesday, September 22, 2009 at 5:39pm.
I had to factor 5x^3-10x^2+43x-6. I got 5x(x^2+-2x)+3(x-2). My teacher said this was half right. What did I do wrong then? Thank you!!
Algebra - Danialle, Tuesday, September 22, 2009 at 6:01pm
CHECK THIS Ihh.tutor
Algebra - MathMate, Tuesday, September 22, 2009 at 6:37pm
Your answer expands to
Could you check the question if the coefficient is not 3x instead of 43x.
The expression as in the qustion has no rational factors, so there is probably a typo somewhere.
Yes, your answer is half-way, if not more, to factorizing completely.
Algebra - Amelie, Tuesday, September 22, 2009 at 9:16pm
Yes, it is supposed to be a three, not a fourty three.
Algebra - MathMate, Tuesday, September 22, 2009 at 10:10pm
If it is a 3x and not 43x, then you only have to continue your factorization:
=5x²(x-2) + 3(x-2)
which is the correct answer.
=5x³ -10² + 3x -6 OK
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