this one question (1 Viewer)

[youraverageangel]

What band would this question be? and where can I find more?

 

[ivanradoszyce]

Hi,

Are you after a solution to this problem as well?

 

[youraverageangel]

Hi,

Are you after a solution to this problem as well?

yes please and also where i can find more

 

[kkk579]

View attachment 43388

What band would this question be? and where can I find more?

Expand (1-x)^n and sub in x=1 for both that and (1+x)^n, finally add the 2 together and then continue to manipulate the eqn to show whatever needs to be proven

 

[wollongong warrior]

View attachment 43388

What band would this question be? and where can I find more?

This is a pretty standard binomial question, I reckon band 4-5?

 

[ivanradoszyce]

yes please and also where i can find more

Substitute into the binomial equation call call it 1. Substitute into another binomial equation call call it 2. Add the 2 equations. Noting when you add an even number + odd number = odd number. The 'odd' binomial terms cancel and the 'even' terms are doubled. Hope that is a starting point.

Attached is a Latex suggestion. Also find attached are some binomial questions from a Pure Mathematics text book from the 1970s. It may NOT be what is required for the EX 1 syllabus, but great practice.