Find the first three terms, in ascending powers of $$$x$$$, in the expansion of $$$(1+a x)^{6}$$$. .................................................................................................................................................... .................................................................................................................................................... .................................................................................................................................................... .................................................................................................................................................... ....................................................................................................................................................

Mathematics

IGCSE&ALevel

CAIE

Exam No：9709_w21_qp_13 Year：2021 Question No：2(a)

Answer:

$1+6 a x+15 a^{2} x^{2}$

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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