Mathematics, 22.04.2020 16:26, charlesiarenee0
In the expansion (ax+by)^7, the coefficients of the first two terms are 128 and -224, respectively. Find the values of a and b
Answers: 1
using Binomial expansion, we have that:
![a = \sqrt[7]{128}\\ \\\\a = 2](/tpl/images/0618/2109/e98a2.png)
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In the expansion (ax+by)^7, the coefficients of the first two terms are 128 and -224, respectively....
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