Help: (x + 2)4 = x4 + 8x3 +... Use the Binomial Theorem to complete the binomial expansion. Enter only the next three terms; use the ^ key for exponents, example: 10x^2+20x+30.
I got this as the answer but it marks it as incorrect.:
x^4+8x^3+32x+16

Question

Help: (x + 2)4 = x4 + 8x3 +... Use the Binomial Theorem to complete the binomial expansion. Enter only the next three terms; use the ^ key for exponents, example: 10x^2+20x+30. 
I got this as the answer but it marks it as incorrect.: 
x^4+8x^3+32x+16

precal · Answer

use Pascal's triangle

precal · Answer

or you could expand it out|dw:1366055880537:dw|