જો $|x| > 1$ હોય,તો $(1 + x)^{-2} = $

  • A
    $1 - 2x + 3x^2 - \dots$
  • B
    $1 + 2x + 3x^2 + \dots$
  • C
    $1 - \frac{2}{x} + \frac{3}{x^2} - \dots$
  • D
    $\frac{1}{x^2} - \frac{2}{x^3} + \frac{3}{x^4} - \dots$

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જો $y = \frac{3}{4} + \frac{3 \times 5}{4 \times 8} + \frac{3 \times 5 \times 7}{4 \times 8 \times 12} + \ldots$ અનંત સુધી હોય,તો

$(1-4x)^{-4}$ ના વિસ્તરણમાં $13$ મું પદ કયું છે?

જો $5|b| < 2|a|$ હોય,તો $(2a + 5b)^{-4}$ ના વિસ્તરણમાં $4^{th}$ પદ શું થાય?

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