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Mathematics
Aleah Pierce
15 August, 18:55
9x^2 - (7x-2) (x+3) = - 12x+1
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Frank Lucero
15 August, 20:22
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9x^ (2) - (7x-2) (x+3) = 12x+1
9x^ (2) - (7x^ (2)) - 2x+21x-6=-12x+1
2x^ (2) + 31x=7
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Alexandra Chambers
15 August, 22:11
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9x^2 - (7x-2) (x+3) = - 12x + 1
9x^2 - [7x^2 + 21x - 2x - 6] = - 12x+1
9x^2 - 7x^2 - 19x + 6 + 12x - 1 = 0
2x^2 - 7x + 5 = 0
(x-1) (2x - 5) = 0
there are two answers
1. x = 1
2. x = 5/2 or 2 1/2
you can try and substitute these numbers in to see if they are correct, because they are for me
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