x^3-3x^2-16x+48=0
By trial & Error method putting x=3 the equation becomes o,
so,
x^2(x - 3) - 16(x - 3) = 0
(x^2 - 16)(x - 3) = 0
(x+4)(x-4)(x-3) = 0
x=-4, +4 or 3
2006-09-17 20:08:08
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answer #1
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answered by Anonymous
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i will kick you off with the first few, i have in basic terms get a couple of minutes. a million) 3x^2 + 7x = -2 so 3x^2+7x+2=0 now in basic terms 3 and a million divide 3 because this is best so the brackets look like (3x )(x )=0 now in basic terms 2 and a million divide 2 because this is best and three*2 + a million*a million = 7 so the brackets are (3x+a million)(x+2)=0 now both (3x+a million)=0 or (x+2)=0 so x= -a million/3 or x=-2 2) x^2-40 9=0 40 9 is 7 squared and also you want the elements of x to cancel so (x+7)(x-7)=0 so x = -7 or 7 3)x^2+5x+4=0 so favor 2 factors of four that upload as a lot as 5 hence (x+4)(x+a million)=0 so x=-4 or -a million run out of time yet i have defined a thanks to do it so that you would possibly want to be in a position to end something
2016-11-27 21:24:05
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answer #2
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answered by ? 4
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x^3-3x^2-16x+48=0
First we factorise
x^2(x-3)-16(x-3)=0
(x^2-16)(x-3)=0
Then we solve the two equation we have derived
x^2-16=0 and x-3=0
x^2=16 and x=3
On the first equation square root both sides of the equation, therefore it will be
x=4
Finally
The solution for x=4 or x=3
2006-09-17 21:30:11
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answer #3
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answered by Anonymous
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x^3 - 3x^2 - 16x + 48
(x^3 - 3x^2) + (-16x + 48)
x^2(x - 3) - 16(x - 3)
(x^2 - 16)(x - 3)
(x - 4)(x + 4)(x - 3)
x = 4, -4, or 3
2006-09-17 19:53:19
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answer #4
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answered by Sherman81 6
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x = -4, 3 or 4
2006-09-17 19:39:38
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answer #5
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answered by Demiurge42 7
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x^3-3x^2-16x+48=0
=> (x-3)(x^2-16)=0
=> (x-3)(x-4)(x+4)=0
So x=3,4,-4
2006-09-17 19:36:49
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answer #6
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answered by astrokid 4
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x^3-3x^2-16x+48=0
x^2(x - 3) - 16(x - 3) = 0
(x^2 - 16)(x - 3) = 0
(x+4)(x-4)(x-3) = 0
x=-4, +4 or 3
Th
2006-09-17 19:36:40
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answer #7
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answered by Thermo 6
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x^2(x-3)-16(x-3)=0
(x-3)(x^2-16)=0
x=3.....x=4
2006-09-17 19:44:05
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answer #8
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answered by tonima 4
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x^2(x-3)-16(x-3)=0
(x^2-16)(x-3)=0
(x+4)(x-4)(x-3)=0
x=-4
x=4
x=3
2006-09-17 19:38:46
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answer #9
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answered by shairee g 1
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Are you using this platform for your home work?
2006-09-17 19:58:36
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answer #10
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answered by CompassionateSoul 3
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