I need the graphs to help you, sorry ;_;
The first one:
5v + 3 = 5v - 5
Subtract 5v from both sides ->
3 = -5
This isn't true so that means there are no solutions...
Step-by-step explanation:
x^2-4x+3=0
(x-3)(x-1)
with the help of trenom you get
trenom is where you need 2 numbers that if you add them together u get "b" and if multiplied u get "c"
then flip them (if positive to negative or negative to positive)
x=3
x=1
and the a is positive
so its a minimum
and the cords are (2,-1)