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Mathematics
Joel Farley
24 December, 09:03
8x^2-2x-3=0 find the solution
+4
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Oswaldo Peters
24 December, 09:49
0
Factor using ac method
mulitply 8 and - 3
-24
find what 2 factors of - 24 add to - 2
-6 and 4
split middle up like that
8x²+4x-6x-3=0
gropu and factor
(8x²+4x) + (-6x-3) = 0
4x (2x+1) + (-3) (2x+1) = 0
undistribute
(4x-3) (2x+1) = 0
set each to zero
4x-3=0
4x=3
x=3/4
2x+1=0
2x=-1
x=-1/2
x=-1/2 or 3/4
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