Question

9ײ=17×+2 con fórmula general pliis!​

Answer 1

Respuesta:

9x2−17x−2=0

(9)⋅x2+(−17)⋅x+(−2)=0

x=−(−17)±(−17)2−4⋅(9)⋅(−2)−−−−−−−−−−−−−−−−−−−√2⋅(9)

x=17±289−(−72)−−−−−−−−−−−√18

x=17±361−−−√18

x=17±(19)18

x1=3618=(18)⋅(2)(18)=2

x2=−218=(2)⋅(−1)(2)⋅(9)=−1⁄9