Question 178200
 Simplify x-4/2x^2-3x-2 - 3/2x+1
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Add parentheses to make it clear.
Is it x - (4/2x^2) -3x -2? Or (x-4)/(2x^2 -3x) - 2? Or something else?
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{{{((x-4)/(2x^2-3x-2)) - 3/(2x+1)}}}
={{{((x-4)/((2x+1)*(x-2))) - 3/(2x+1)}}}
={{{((x-4)/((2x+1)*(x-2))) - 3(x-2)/((2x+1)*(x-2))}}}
={{{(((x-4) - 3(x-2))/((2x+1)*(x-2)))}}}
={{{(((x-4)- 3x+6)/((2x+1)*(x-2)))}}}
={{{((-2x+2))/((2x+1)*(x-2)))}}}
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= -2(x-1)/(2x^2 - 3x - 2)
That's choice a, except for the minus sign.