${(1 + x - 3{x^2})^{3148}}$ ના સહગુણકનો સરવાળો મેળવો.
${(1 + x - 3{x^2})^{3148}}$ ના સહગુણકનો સરવાળો મેળવો.
- A
$7$
- B
$8$
- C
$-1$
- D
$1$
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