Expand $$$\left(1-\frac{1}{2 x}\right)^{2}$$$ .................................................................................................................................................... .................................................................................................................................................... .................................................................................................................................................... ....................................................................................................................................................

Mathematics

IGCSE&ALevel

CAIE

Exam No：9709_w21_qp_11 Year：2021 Question No：1(a)

Answer:

$1-\frac{1}{x}+\frac{1}{4 x^{2}}$

Knowledge points:

1.6.1 use the expansion of , where is a positive integer (Including the notations and n!) (Knowledge of the greatest term and properties of the coefficients are not required.)

Answer:

Knowledge points:

Solution:

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