English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

2x squared + 24x + 72
how would you know that those are the correct factors?

2007-12-16 08:40:11 · 4 answers · asked by 11:11 3 in Science & Mathematics Mathematics

4 answers

=2(x + 6)^2

Start with the original equation: 2x^2 + 24x + 72.
You factor out the 2 from the first term (because it divides into all the terms evenly) to get: 2(x^2 + 12x + 36).
Then factor what's left in the brackets (what two terms multiply to 36 and add to 12, which would be 6 and 6).
Therefore you get: 2(x + 6)(x + 6). A term multiplied by itself is the same as squaring it, and thus, you get: 2(x + 6)^2.

2007-12-16 08:52:35 · answer #1 · answered by Glo 2 · 0 0

2(x+6)^2

2007-12-16 16:49:39 · answer #2 · answered by coachk1968 2 · 0 0

2(x^2+12x+36)
2(x+6)^2

x*x=x^2
6*x=6x*2 because you are squaring here=12x
6*6=36

2(x^2 +12x+36)=2x^2+24x+72

2007-12-16 17:14:30 · answer #3 · answered by Dave aka Spider Monkey 7 · 0 0

it's in standard form. x^2, x, then the constant.
since the degree is positive 2, the arrows would display both going upward over the x axis

i doubt thats the answer, but whatev

2007-12-16 16:46:55 · answer #4 · answered by sou 2 · 0 0

fedest.com, questions and answers