Question

Math: https://snipboard.io/1YqKTd.jpg

Answer 1

any idea?

Answer 2

Nope not yet

Answer 3

a^5b^3
b^8
a^4b^4
a^8
ab^7

Answer 4

Because the sums of their powers are 8 and if the sum of the power do not match up to 8 then it is not going to be correct

Answer 5

correct

Answer 6

\[(x+a)^n=C_{0}^{n}x^n+C _{1}^{n}x^{n-1}a+C _{2}^{n}x^{n-2}a ^{2}+...+C _{r}^{n}x ^{n-r}a^r+...+C _{n}^{n }a^n\]
we see sum of powers of each term=power of binomial (n-1+n=n,n-2+2=n,n-r+n=n)
so you can guess which terms belong to expansion of given binomial.
Here power of binomial=8
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