Question

when using the binomial formula what is the correct expansion of (x+y)^4

Answer 1

lol same as it is without the "binomial formula"
but we can do it for sure

Answer 2

but the answer choices are long.

Answer 3

the first term will be \(x^4\)
the next one will be something times \(x^3y\)
the third one will be something times \)x^2y^2\)
the four will have a \(xy^3\) and the last will be \(y^4\)

Answer 4

yeah it is long all right

Answer 5

thank you :D

Answer 6

the coefficients you can get from the fourth row of pascal's triangle
http://www.mathsisfun.com/pascals-triangle.html

Answer 7

you see it is \(1,4,6,4,1\)

Answer 8

so final answer will be \[x^4+4 x^3 y+6 x^2 y^2+4 x y^3+y^4\]
you want to check it?

Answer 9

i go it. thank you!!