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Determinants — Maths STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceMathsDeterminants1 Mark
MCQ
Evaluate $\begin{bmatrix}8\text{x}+1&2\text{x}-2\\\text{x}^2-1&3\text{x}+5\end{bmatrix}$ is:
  • A
    $-2 x^3-26 x^2+45 x+3$
  • ✓
    $-2 x^3+26 x^2+45 x+3$
  • C
    $-2 x^3+26 x^2+45 x-3$
  • D
    $-2 x^3-26 x^2-45 x+3$
✓

Answer

Correct option: B.
$-2 x^3+26 x^2+45 x+3$

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