Answer:
I have no idea Im so sorry i tried to understand all i could think of is x+y=99
Answer:
144
Step-by-step explanation:
12x12=144
Answer:
x^2 -81
Step-by-step explanation:
(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
x^2 -81
Answer:
In the attached file
Step-by-step explanation: