What is the fourth term in the expansion of (x + 2)^7?
Answer

280x^4

120x^3

320x^2

168x^4 What is the fourth term in the expansion of (x + 2)^7?
Answer

280x^4

120x^3

320x^2

168x^4 @Mathematics

Question

What is the fourth term in the expansion of (x + 2)^7?
Answer
		
280x^4
		
120x^3
		
320x^2
		
168x^4 What is the fourth term in the expansion of (x + 2)^7?
Answer
		
280x^4
		
120x^3
		
320x^2
		
168x^4 @Mathematics

cwrw238 · Answer

(r+1)th term of (a + b)^n = nCr a^n-r b^r

anonymous · Answer

look at khayam pascal triangle

anonymous · Answer

well, it's definitely the one with X^4   :)

cwrw238 · Answer

4th term of (x +2)^7 = 7C3 x^(7-3) 2^3
= 35 x^4 * 8
= 280 x^4