Question

lim x->0 (1+x)(1+2x)(1+3x)-1 / x
indetermiation 0/0

Answer 1

expand the top and then you will see you can factor out an "x"

Answer 2

well, the factor : (1+x)(1+2x)(1+3x)-1 its hard to me

Answer 3

please if you can help me

Answer 4

do it in steps

Answer 5

(1+x)(1+2x) = 2x^2 +3x +1

then do

(2x^2 +3x+1)(1+3x)

Answer 6

thankks!

Answer 7

yw

for checking answers i recommend using this site
http://www.wolframalpha.com/input/?i=lim+x-%3E0+%28%281%2Bx%29%281%2B2x%29%281%2B3x%29-1%29+%2Fx

Answer 8

and the -1? after the equation

Answer 9

you will add it to the result you multiplied out

Answer 10

ahh ok okokokk :)

Answer 11

to factor :

Answer 12

not quite...you didn't finish expanding

(2x^2 +3x +1)(1+3x) = 6x^3 + 11x^2 +6x + 1