Question 191732This question is from textbook
: (3x^3-x^2+10x-4) divided by (x+3) I am supposed to divide this, please explain how to solve this problem. Thank You
This question is from textbook
Answer by RAY100(1637)   (Show Source):
You can put this solution on YOUR website! bear with us, hard to demo on typewriter
division is an algorithm of: divide, multiply, subtract, bring down, and repeat
the same applies to polynomials
step (1)(3x^2) step (2) (-10x) step (3)(+40)
___________3x2 -10x +40____-124/(x+3)____________________
x+3 ! 3x^3 -x^2 +10x -4
- ( 3x^3 +9x^2) step (1) (3x^2 *(x+3))
________________
-10x^2 +10x
- ( -10x^2 -30x) step(2) ( -10x *(x+3))
___________________
+40x -4
- (+40x +120) step(3) (40 * (x+3))
_________________
-124
restating (3x^3-x^2+10x-4) / (x+3) = 3x^2 -10x +40 - (124) /( x+3)
check ( 3x^2 -10x +40) * ( x+3) = 3x^3 -x^2 +10x +120 + rem of (-124) ok
note we just could not get it to space well, if you rewrite with spacing it might be better
note if this is understood review next step of synthetic division pls
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