Question

Querovo cslculo completo desta equacao do segundo grau encontrndo a riaz se tiver
2x2-80x+7=0

Answer 1

Olá!!!!

2x2−80x+7=0  

(2)⋅x2+(−80)⋅x+(7)=0

x=−(−80)±(−80)2−4⋅(2)⋅(7)−−−−−−−−−−−−−−−−−√2⋅(2)

x=80±6400−(56)−−−−−−−−−√4

x=80±6344−−−−√4

x=80±(2)⋅1586−−−−√4

x=(2)⋅[(40)±1586−−−−√](2)⋅(2)

x1=40+1586−−−−√2

x2=40−1586−−−−√2