Question

x^2+12x-28=0 usando fórmula de baskara​

Answer 1

x^2+12x-28=0

∆ = b2 -4 .a .c  

∆= 122 -4 .1 . (-28)

∆= 144 + 112

∆= 256

x=(-b±√∆)/2a  

x=(-12±√256)/2.1  

x=(-12±16)/2  

x1= (-12+16)/2= 4/2=2

x2=(-12-16)/2 =(-28)/2= -14