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# C1 question arghhhhh remainder theorem watch

1. Question: find the remainder of x^3-5x^2-8x+48 when (x+2) the answer is supposed to be R=20 but i keep getting R as 36???

this is what ive done (-2^3) - (5 x -2^2) - (8 x -2) +48
= -8 - 20 + 16 + 48 = 36

Pls help
Question: find the remainder of x^3-5x^2-8x+48 when (x+2) the answer is supposed to be R=20 but i keep getting R as 36???

this is what ive done (-2^3) - (5 x -2^2) - (8 x -2) +48
= -8 - 20 + 16 + 48 = 36

Pls help
I also get the remainder to be 36. However, if the coefficient of x^3 was 3 instead of 1 then the remainder will be 20.
Question: find the remainder of x^3-5x^2-8x+48 when (x+2) the answer is supposed to be R=20 but i keep getting R as 36???

this is what ive done (-2^3) - (5 x -2^2) - (8 x -2) +48
= -8 - 20 + 16 + 48 = 36

Pls help
I agree, assumimg you have copied the question correctly, and I get the same answer by long division.

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Updated: January 14, 2017
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