Question

what is binomial theorm​

Answer 1

a formula for finding any power of a binomial without multiplying at length.

Answer 2

Answer:

Step-by-step explanation:

Binomial theorem is all about expansion of an exponent.

Where variables can be found with this rule -

a^n-k into b^k

and, coefficient can be found by

1 (for 0 degree)

1 1 (for 1 degree)

1 2 1 (for degree 2)

1 3 3 1 (for degree 3)

For example,

(a+b)^3

Here is degree 3, so, n=3

Then

Variable terms are (when n=3 and k=0, 1, 2, 3)

a^3+ a^2b + ab^2 + b^3

Now their coefficient can be found by looking at the above tree.

1 3 3 1

Let's write the final expansion

a^3+ 3a^2b + 3ab^2 + b^3