Question

me ajuda por favorrrrrr​

Answer 1

Resposta: x'=1 e x"= -13

Explicação passo-a-passo:

x²+12x-13=0

a=1

b=12

c= -13

∆=b²-4ac

∆=12²-4*1*(-13)

∆=144+52

∆=196

x=-b±√∆/2a

x= -12±√196/2*1

x= -12±14/2

x'= -12+14/2=2/2= 1 ✓

x"= -12-14/2=-26/2= -13 ✓