Write the coefficient of x3 in the expansion (x-2)3
Answers
Answered by
0
Answer:
the answer is 1. I think u understand
Answered by
0
Answer:
➡(x-1) ³
Using identity (a-b) ³= a³-b³-3ab(a-b)
➡x³-1-3×x×1(x-1)
➡x³-1-3x(x-1)
➡x³-1-3x²+3x
➡x³-3x²+3x-1
The coefficient of x³ is 1.
Hope this is helpful to you!
Similar questions