How do you solve this problem? (x+3) cubed

You would expand becausee it isn't equal to anything

(x+3)^3=(x+3)(x+3)(x+3)
we can use binomial theorem or pascal's triangle
anyway, pascal's triangle is more practicl for this one

so
for the 3rd power


a=x
b=3

=

The correct answer is d, hope this