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AP EAMCET · Maths · Quadratic Equation

If \(x^2+p x+1\) is a factor of \(a x^3+b x+c\), then

  1. A \(a^2+c^2=a b+3\)
  2. B \(a^2-c^2=a b\)
  3. C \(a^2-c^2=-a b\)
  4. D \(a^2+c^2=a b\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(a^2-c^2=a b\)

Step-by-step Solution

Detailed explanation

\begin{array}{r}a x-a p \\ x ^ { 2 } + p x + 1 \longdiv { a x ^ { 3 } + b x + c } \\ \mathrm{ax}^3+\mathrm{apx}^2+a x \\ -\quad-\quad- \\ -\mathrm{apx}^2+(\mathrm{b}-\mathrm{a}) \mathrm{x}+\mathrm{c} \\ -\mathrm{apx}^2-\mathrm{ap}^2 \mathrm{x}-\mathrm{ap} \\ +\quad+\quad+ \\…