(1+3x+9xsquared)(1-3x). I am not sure??
2006-11-11 07:03:19 · 12 answers · asked by roi 1 in Science & Mathematics ➔ Mathematics
(1+3x+9xsquared)(1-3x)
= 1*(1+3x+9x^2)
-3x(1+3x+9x^2)
=1+3x+9x^2-3x-9x^2-27x^3
=1-27x^3
therefore,
(1+3x+9xsquared)(1-3x)
=(1-27x^3)
i hope that this helps
2006-11-11 07:21:05 · answer #1 · answered by Anonymous · 1⤊ 0⤋
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2016-12-10 07:12:27 · answer #2 · answered by Anonymous · 0⤊ 0⤋
No equation to solve here. Do you merely want to multiply the two expressions?
(1 + 3x + 9x^2)(1-3x)
Multiply each term in one expression by each term in the other expression
1 + 3x + 9x^2
1 - 3x
- - - - - - - - - -
1 + 3x + 9x^2
. . - 3x - 9x^2 - 27x^3
- - - - - - - - - - - - - -
1 . . . . . . . . - 27x^3
1 - 27x^3
2006-11-11 07:40:14 · answer #3 · answered by Anonymous · 0⤊ 0⤋
39
2006-11-11 07:06:40 · answer #4 · answered by ~â?[[?????]] ~?~ 1 · 0⤊ 2⤋
(1+3x+9x^2)(1-3x)
= (1+3x)(1-3x) + 9x^2(1-3x)
= 1 - 9x^2 + 9x^2 - 27x^3
= 1 - 27x^3
2006-11-14 12:24:14 · answer #5 · answered by Kemmy 6 · 0⤊ 0⤋
84x + 1 (9x squared = 81x + 3x)
times by
1 - 3x
(ignore the 1 -)
252x + 1 -1 =252x
i think, been a long time since i did this. lol
2006-11-11 07:13:14 · answer #6 · answered by Anonymous · 0⤊ 1⤋
Hey there,
this is what I think it is, its been a few years, but this is how I would do it. Hope this helps
1 + 3x + 9x2(sq) -3x -2 – 27x3(cubed) =
-1 + 9x2 (sq) - 27x3 (cubed) =
1 - 9x2 (9 squarede) + 27x3 (3 cubed)
2006-11-11 07:11:48 · answer #7 · answered by Juliette D 3 · 0⤊ 1⤋
well i am really not sure so you better check! but is it
2+3x+21x²+27x³
i am not sure as i am only in year 11 and i have not learnt how to do these equation yet! hope i guessed right!?! xxxx
2006-11-11 07:12:49 · answer #8 · answered by Kettle 2 · 0⤊ 1⤋
the answers 39 bbz.
good luck
pinky
xxxxxxxxxxxxxxx
2006-11-11 07:07:55 · answer #9 · answered by danni 3 · 0⤊ 1⤋
1-27x cubed (richardal...answer is write, that's the correct solution for the answer)
2006-11-11 07:23:15 · answer #10 · answered by Simply_Me 3 · 0⤊ 0⤋