Help with 4 and 5 I don’t get it lol

FIRST

anything raised to the zero power is equal to 1 (one)

so I think that three is wrong

as for 4

3/3 = 1    5/5= 1    x/x = 1 anything divided by itself is one...

so you have 1*1 = 1

as for 5 ... it is the same as for ALL THE STUFF on the TOP

gets cancelled by the SAME items on the BOTTOM ???/??? if they are the same the answer is 1

NOTE if ??? = zero then we have a problem .. you can't divide by zero that is an exception

Step-by-step explanation:

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)