Question

4(x+9)=5x(x + 7) + 4 me ayudan a resolverla explicado ?

Answer 1

Respuesta:

(4x+36)−{5x2+35x+4}=0

−5x2−31x+32=0

(−5)⋅x2+(−31)⋅x+(32)=0

x=−(−31)±(−31)2−4⋅(−5)⋅(32)−−−−−−−−−−−−−−−−−−−−√2⋅(−5)

x=31±961−(−640)−−−−−−−−−−−−√−10

x=−31±1601−−−−√10

x1=−31+1601−−−−√10

x2=−31−1601−−−−√10