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If y=3 x+6 x²+10 x³+ , , then 1 3 y- 1.4 3² 2 y²+ 1.4 .7 3² 3 y³- is equal to

Options

  1. Ax
  2. B1-x
  3. C1+x
  4. Dx^ x

Correct answer

A. x

Step-by-step solution

We have y=3 x+6 x²+10 x³+ 1+y=1+3 x+6 x²+10 x³+ 1+y=(1-x)⁻³ 1-x=(1+y)^ -1 / 3 x=1-(1+y)^ -1 / 3 = 1 3 y- 1.4 3² 2 y²+ 1 4 7 3² 3 y³-

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