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TS EAMCET · Maths · Binomial Theorem

For |x|<43, the approximate value of 1(4-3x)12 is

  1. A 14-2x3+12x239
  2. B 1-3x16-15256x2
  3. C 12+3x16+27x2256
  4. D 12-3x16+15256x2
Verified Solution

Answer & Solution

Correct Answer

(C) 12+3x16+27x2256

Step-by-step Solution

Detailed explanation

Given that x<43 Now, 1(4-3x)12=4-3x-12=4-121-3x4-12=121-3x4-12   ...1 We know that 1+xn=1+n1x+n(n-1)2x2+........ Where x=-34x and n=-12, then 121-3x4-12=121+-12-34x1+-12-12-12-34x2+..... ⇒121-3x4-12=121+38x+-12-322916x2+.....…