Answer:
-12
Step-by-step explanation:
We start with the equation: 
Substitute the variables: 
Solve using order of operations (start with multiplication): 
And then addition/subtration: 
Oi :)
a= l*w
a=1.5 * 0.75
a= 1.125
Write the conjugates of them then FOIL both the top and bottom, then factor