2013 · Q18
(a+1)^4 − a^4 is divisible by
Elementary MathematicsAlgebra
- A2a²+2a−1
- B2a²−2a−1
- C2a²−2a+1
- D2a²+2a+1
Explanation
(a+1)^4−a^4 = 4a³+6a²+4a+1 = (2a²+2a+1)(2a+1); divisible by 2a²+2a+1. Answer D.
(a+1)^4 − a^4 is divisible by
Explanation
(a+1)^4−a^4 = 4a³+6a²+4a+1 = (2a²+2a+1)(2a+1); divisible by 2a²+2a+1. Answer D.