Question

24=14x- x (ao quadrado)

Answer 1

-x²+14x=24

-x²+14x-24=0

x1+x2=14

x1.x2=24

12+2=14

12.2=24

x=12 ou x=2

-(2)²+14(2)-24=0

-4+28-24=0

24-24=0

0=0

-(12)²+14(12)-24=0

-144+168-24=0

24-24=0

0=0

S={2,12}