brookedoane11201 brookedoane11201

22-05-2018
Mathematics

contestada

coefficient of x^2 in expansion of (x+2)^5

Respuesta :

sqdancefan sqdancefan

22-05-2018

The x² term will be C(5,2)x²·2³ = 80x².

The coefficient is 80.

_____
C(n, k) = n!/(k!·(n-k)!)
C(5, 2) = 5·4/(2·1) = 10

Answer Link

Otras preguntas

Jess used 11 1/2 cups of flour to make 3 1/2 batches of oatmeal cookies. One batch makes 24 cookies. If Jess follows the same recipe, how many cookies can she m

You notice that two mutations result in no expression of the lac operon (Mutations 1 and Mutation 2), two mutations result in low expression of the lac operon e

PLEASE ANSWER (100points) What reason was given for closing the ghettos? Anti-Nazi politics in the ghetto Isolation of the Jews Typhus and typhoid fever in the

What is the missing reason in the following proof? Given: BC=AD, AB=DC Prove: BE=ED

X/3=15/12 Aflați termenul necunoscut din proporție

Help me please. Make sure you put it in your own words. Thank you for your help.

Is Maharashtra located in the North, East, South or West of India? State where it is clearley is on a map aswell.

assess how substance abuse may affect learners academic performance

HELP!!! WILL MARK BRAINLIST!!!! AND A 5 STAR REVIEW!!!

In areas without excessive light pollution, a band of light can be seen spanning the night sky. This band of light comes from OA. Stars at the edge of the unive