How do you do this problem?
^ means to the power of
2007-01-13 12:48:44 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
How do you do this problem????
nine C squared plus thirty C plus twenty five minus four D squared
Factor by grouping. How do I do this?
2007-01-13 12:56:59 · update #1
(3c+5)^2-4d^2
(3c+5+2d)(3c+5-2d)
2007-01-13 13:07:48 · answer #1 · answered by Anonymous · 4⤊ 0⤋
This is a difference of squares; it's just not obvious yet.
9c^2 + 30c + 25 - 4d^2
For one thing, the first three terms are a square binomial.
(3c + 5)^2 - 4d^2
Now, factor as a difference of squares.
(3c + 5 - 2d) (3c + 5 + 2d)
2007-01-13 20:55:21 · answer #2 · answered by Puggy 7 · 1⤊ 1⤋
I'm not sure what you're supposed to do.
The only thing I see is that 9c^2 + 30c +25 = (3c + 5)^2
2007-01-13 20:53:53 · answer #3 · answered by JasonM 7 · 2⤊ 0⤋
There is definitely a part of this question you've left out.
2007-01-13 20:53:32 · answer #4 · answered by BrightSexyBaby23 3 · 1⤊ 0⤋
Im guessing this is what you want.
(3c+5+2d)times(3c+5-2d)
2007-01-13 20:56:09 · answer #5 · answered by Vince 2 · 1⤊ 0⤋
Ermm ... you left something out. What are we supposed to do with this? Factor?
You didn't say what it EQUALS if you want us to solve for c and d.
2007-01-13 20:56:48 · answer #6 · answered by Novy 5 · 0⤊ 0⤋
3c(3c+ 10) + (5-2d)(5+2d)
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2007-01-13 21:22:40 · answer #7 · answered by aeiou 7 · 0⤊ 0⤋
well what's the question here?
2007-01-13 20:52:57 · answer #8 · answered by Nick C 4 · 1⤊ 0⤋
#@!?
2007-01-13 20:54:32 · answer #9 · answered by highheels_9 2 · 1⤊ 0⤋