We write the polynomial:
We have then:
5x ^ 2 + 3x-4 = 0
a=5
b=3
c=-4
Applying resolver we have
x = (- b +/- root (b ^ 2 - 4ac)) / (2a)
Substituting values:
x = (- (3) +/- root ((3) ^ 2 - 4 (5) (- 4))) / (2 (5))
Answer:
x = (- (3) +/- root ((3) ^ 2 - 4 (5) (- 4))) / (2 (5))
(option 1)