SOLUTION: Divide using polynomials long divison? (3x^2-29x+56)/(x-7) Can Someone Please Help Me?

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Question 1057353: Divide using polynomials long divison?
(3x^2-29x+56)/(x-7)

Can Someone Please Help Me?
Found 2 solutions by math_helper, rothauserc:
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!
+%283x%5E2+-+29x+%2B+56%29%2F%28x+-+7%29+
= +3x+%2B++%28-8x+%2B+56%29%2F+%28x+-+7%29+
= +3x+-+8+ (with no remainder)
—
Check:
+%283x-8%29%28x-7%29+=+%283x%5E2+-+21x+-+8x+%2B+56%29+
++%283x-8%29%28x-7%29+=+%283x%5E2+-+29x+%2B+56%29+ (ok)

Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
1) use 3x and we have 3x^2 - 21x subtraction gives the remainder
:
-8x + 56
:
2) use -8 and we have -8x +56 subtraction give 0
:
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Therefore we get (3x -8) and
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:
(x - 7) * (3x - 8) = 3x^2 -29x + 56
: