We substitute the given into the equation
given: a=-1, b=2, c=\(\frac{-1}{4}\)
=(\(\frac{4b-3}{2a}\)-1
=\(\frac{4(2)-3}{2(-1)}\)-1
=\(\frac{8-3}{-2}\)-1
=\(\frac{5}{-2}\)-1
to continue, we can either find a common denominator or change the fraction to decimal.
Fraction to Decimal:
\(\frac{5}{-2}\)=-2.5
Equation=-2.5-1=-3.5
OR Common Denominator:
=\(\frac{5}{-2}\)\(\frac{-1}{1}\)×\(\frac{-2}{-2}\) (denominator should be -2=common)
=\(\frac{5}{-2}\)+\(\frac{2}{-2}\)
=\(\frac{7}{-2}\)
which also = to -3.5
