(2x+ 1)(3x-2) = 55
We need to
find x values that satisfies the equation.
First, let us
expand the brackets.
==> 2x*3x + 1*3x + 2x*-2 + 1*-2
= 55
==> 6x^2 +3x - 4x - 2 =
55
Now we will subtract 55 from both
sides.
==> 6x^2 - x -2 - 55 =
0
==> 6x^2 - x - 57 =
0.
Now we can factor or use the formula to determine the
roots of the quadratic equation.
Let us
factor.
==> (6x-19) ( x +3) =
0
==> (6x-19) = 0 ==> 6x = 19 ==> x =
19/6
==> (x+3) = 0 ==> x =
-3.
Then, there are two possible
solutions.
x = { -3,
19/6}
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