Question

Q3) What number must be added to 3x + x - 22 x +9, so that result becomes exactly divisible
by x +3.

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Answer 1

(3x^3+x^2-22x+9) / (x+3) = 3x^2 -8x+2 with remainder 3. So, we must be add (-3) as to make exactly divisible by (x+3)