
Use FOIL to help expand the expressions
First
Outer
Inner
Last
When we foil out the expression we get:

Now start multiplying the expression to get:

Combine like terms; Final answer:
so A
Answer:
HI = 13
Step-by-step explanation:
The triangle that is shown is a 45-45-90 triangle, so we know that GH = GJ = 9 and IJ = 13, we are able to solve for HI.
Technically, IJ = HI, since both triangles are congruent. Both IJ and HI will be 13.
Answer:
x > 12
Step-by-step explanation:
9x>108
x> 108/9
x > 12