Question

could you tell me if this is correct then?
problem=> (x+3)^2
answer is => (x+3)(x+3) = xx+x*3+3*x+3*3 = x^4+12 ?

Answer 1

no, your first step was correct
xx+x*3+3*x+3*3
but xx=x^2\[xx=x^{2}\]
x*3 and 3*x both will give the ans as 3x each.
Together they are 3x+3x=6x.
3*3=9
So,\[x^{2}+6x=9\]

Answer 2

gee thanks i think i have that one undrstood then... appreciate your help

Answer 3

cool