Answer:
1/4
Step-by-step explanation:
0.25 is 1/4 of a whole use quarters for example
243.09
hope it helped
x^2 -81
(x+9)(x-9)
FOIL
first x*x = x^2
outer -9x
inner 9x
last -9*9 = -81
Add them together
x^2 -9x+9x -81
Combine like terms