MCQ
The coefficient of $x^2$ in $\left(2-3 x^2\right)\left(x^2-5\right)$ is:
- ✓$17$
- B$-10$
- C$1$
- D$-17$
✓
Answer
Correct option: A.
$17$
$\left(2-3 x^3\right)\left(x^2-5\right)$
$=2 x^2-10-3 x^4+15 x^2$
$=-3 x^4+17 x^2-10$
Therefore, the coefficient of $x^2$ is $17 .$
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