Question

the coefficient of (x+5)³ is -----
( plz explain me it clearly i don't know why i'm getting 125 while others are getting 75 ) ​

Answer 1

Answer:

75

Step-by-step explanation:

: (x)³- (5)³ - 3(x)² (5) + 3(x) (5)²

:x³- 125 - 3(x²)(5) + 3(x)(25)

:x³- 125 - 15x² + 75x

:x³ - 15x² + 75 - 125