Given the equality ( x-3) = 5/(2x+4). We need to find x
values that satisfies the equality.
==> (x-3) =
5/(2x+4).
First, we need to re-write the
equation.
We will multiply by the denominator
(2x+4).
==> (x-3)(2x+4) =
5
Now we will open
bracket.
==> x*2x + x*4 - 3*2x -3*4 =
5
==> 2x^2 + 4x - 6x - 12 =
5
Now we will subtract 5 from both
sides.
==> 2x^2 -2x -12 - 5 =
0.
==> 2x^2 - 2x - 17 =
0
Now we will use the formula to determine the
roots.
==> x1= (2 + sqrt(140) / 4 = 2+2sqrt35/
4
==> x1= (1/2)+
(sqrt35)/2
==> x2=
(1/2)-(sqrt35)/2
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