Question

Which expression is equivalent to (1 + 9x)10 ?
A.
–10 – 90x
B.
11 + 9x
C.
10 + 90x
D.
–11 – 9x

Answer 1

multiply each term in the brackets by 10
1* 10 + 9x*10
once this is done look at the possible answers and see if you see any relation

Answer 2

c

Answer 3

yes