Question

5x ao quadrado menos 11x igual menos 2

Answer 1

5x^2-11x + 2 = 0
(-11)^2 -4.5.2
121- 40
81

X1

[-(-11) + 9]/ 2.5
(11+9)/10
20/10
2

X2

[-(-11) -9]/ 2.5
(11-9)/10
2/10 ( simplifica por 3

1/5

S= { 1/5,2}