JEE Math Practice Question
If A denotes the sum of all the coefficients in the expansion of $\left(1-3 x+10 x^2\right)^{\mathrm{n}}$ and B denotes the sum of all the coefficients in the expansion of $\left(1+x^2\right)^n$, then :
- A.$\mathrm{B}=\mathrm{A}^3$
- B.$3 \mathrm{A}=\mathrm{B}$
- C.$A=3 B$
- D.$\mathrm{A}=\mathrm{B}^3$
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