MCQ
${(1 + x - 3{x^2})^{3148}}$ ના સહગુણકનો સરવાળો મેળવો.
- A$7$
- B$8$
- C$-1$
- ✓$1$
Sum of coefficients = ${(1 + 1 - {3.1^2})^{3148}}$
= ${(2 - 3)^{3148}}$ = ${( - 1)^{3148}} = 1$.
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