Assuming yo mean
k²-4k-21
factor by doing
what 2 numbers multipily to get -21 and add to get -4?
-7 and 3
(k-7)(k+3) is factored
To solve these type of problem you have to make the denominator the same or use the claculator.
let us do this problem by making the denominator the same.


So, now. the one with the largest numerator is the largest fraction
In this case,

is the largest which is equal to

.
So, the largest fraction is

.
Answer:
60 slices
Step-by-step explanation:
1 pizza = 10 slices
6 pizzas = 10 slices * 6 = 60 slices
Answer:
2/5
Step-by-step explanation:
40 students drive to school
40/100 drive to school
2/5