157 reputation
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location Brazil
age
visits member for 2 years, 10 months
seen Apr 6 at 3:38

Is there live outside the labs? :)


Mar
30
awarded  Informed
Jan
23
comment How to factorize $2x^2+5x+3$?
Very informative and algebric answer. If it'd be possible, I'd maked it as an accepted answer together with the `amWhy' answer. Thank you.
Jan
23
accepted How to factorize $2x^2+5x+3$?
Jan
20
comment How to factorize $2x^2+5x+3$?
I'm sorry, I could not understand how you do that $f=2x^2+5x+3 \iff 2f=(2x)^2+5(2x)+6$; shouldn't it be $(2)(2x)^2$? @bill-dubuque
Jan
20
comment How to factorize $2x^2+5x+3$?
any hint towards how you decide this approach? (eagle's eyes? :)
Jan
20
asked How to factorize $2x^2+5x+3$?
May
23
revised How to show $x^4 - 1296 = (x^3-6x^2+36x-216)(x+6)$
suppress exclamation
May
23
comment How to show $x^4 - 1296 = (x^3-6x^2+36x-216)(x+6)$
Thank you for your response. It really helps! I just accepted julien responses because it is generic.
May
23
awarded  Commentator
May
23
comment How to show $x^4 - 1296 = (x^3-6x^2+36x-216)(x+6)$
Thank you for your response. It really helps! I just accepted julien responses because it is generic.
May
23
comment How to show $x^4 - 1296 = (x^3-6x^2+36x-216)(x+6)$
Thank you for your response. It really helps! I just accepted julien responses because it is generic.
May
23
comment How to show $x^4 - 1296 = (x^3-6x^2+36x-216)(x+6)$
Very good to know about synthetic division.
May
23
accepted How to show $x^4 - 1296 = (x^3-6x^2+36x-216)(x+6)$
May
23
comment How to show $x^4 - 1296 = (x^3-6x^2+36x-216)(x+6)$
Very good! Thank you!
May
23
comment How to show $x^4 - 1296 = (x^3-6x^2+36x-216)(x+6)$
Then $x^4-6^4=(x-6)(x^3+6x^2+36x+216)$, great! The formula works! Is there any tips for exchange $x-6$ by $x+6$ in the expression?
May
23
comment How to show $x^4 - 1296 = (x^3-6x^2+36x-216)(x+6)$
@egreg, what is the name of the method used in the table? You comment in the question "dividing", but which is the specifically name of it? Thank you.
May
23
asked How to show $x^4 - 1296 = (x^3-6x^2+36x-216)(x+6)$
Jan
6
revised How to calculate Inverse Z-Transform by long division
deleted 1 characters in body
Jan
1
accepted How to calculate Inverse Z-Transform by long division
Dec
31
awarded  Supporter