Binomial Help!!! (1 Viewer)

[Jason Xie]

hi guys, i didnt get these two questions, please help, thanks ^^

Q1：Find the greatest term in (5-4x)^12 if x=2/3
Q2: Find the value of k if the coefficients of x^k and x^k+1 in (3x+2)^19 are equal

Show full workings please!!!!

 

[Jason Xie]

anyone help me????

 

[Fus Ro Dah]

Um, these are Extension 1 questions.

 

[Jason Xie]

sorry, it is, but can u help me?

 

[such_such]

Could be wrong, but idea's there.

 

[Jason Xie]

such_such what about the second question???