If x^5+2x^4+X+6is divided by g(X) and the quotient is x^2+5x+7, then the possible degree of g(X) is
Answers
x^5 + 2x⁴ + x + 6 is divided by g(x) and the quotient is x² + 5x + 7.
To find : The possible degree of g(x)...
solution : From Euclid division lemma,
a = bq + r , where 0 ≤ r < b
here a = x^5 + 2x⁴ + x + 6 , b = (x² + 5x + 7) and q = g(x)
so, x^5 + 2x⁴ + x + 6 = (x² + 5x + 7)g(x) + r
⇒(x^5 + 2x⁴ + x + 6 - r)/(x² + 5x + 7) = g(x)
from above it is clear that, possible degree of g(x) = highest degree of (x^5 + 2x⁴ + x + 6 - r) - highest degree of (x² + 5x + 7)
= 5 - 2
= 3
Therefore the possible degree of g(x) = 3.
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