Question

solución y comprobación, ayúdenme porfa
3z²-(z-5)(z-3)=3z²+1
​

Answer 1

R3z²-(z-5)(z-3)= 3z²+1

3z²-(z²-8z+15)= 3z²+1

3z²-z²+8z-15= 3z²+1

-z²+8z= 1+15

z²-8z= -1-15

z(z-8)= -16

z= 16/(z-8