Question

What must be added to x3-3x2-12x+19 so that the result is exactly divisible by x+3

Answer 1

here's u r answer

So, let r(x) = ax +b is added to p(x) so that p(x) + r(x) is divisible by q(x). Hence, x 3 - 3x 2 -12x +19 is divisible by x 2 + x -6 when 2x+5 is added to it

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Answer 2

Answer:

x+3 divide the polynomial and then the remainder which will be left after dividing that will be the ans. of the question