Question

the
coefficient of x in the expansion of
(x+5)3 is​

Answer 1

Answer:3x+15

co efficient of x = 3

Answer 2

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If you meant (x+5)³:

(x+5)³=x³+5³+3.x.5(x+5)

=x³+125+15x(x+5)

=x³+125+15x²+75x

Therefore, coefficient of x is 75.

If you meant 3.(x+5):

3x+15

Therefore, coefficient of x is 3.