Answer:
#5
Area = Area of bigger triangle - Area of small triangle

#8
Area = area of square + area of two right angled triangles

Answer:

Step-by-step explanation:
−12 = 5[16] + b
80

If you want it in <em>Standard</em><em> </em><em>Form</em>:
y = 5x - 92
- 5x - 5x
__________

I am joyous to assist you anytime.
Answer:
-207xy
Step-by-step explanation:
-6x^3 - 9xy + 18x
-216x -9xy +18x
-225xy + 18x
-207xy
If I'm not mistaken.
Answer:
-3
Step-by-step explanation:
First take (-3+2) and simplify that which will turn into (-1). Then take (-5+7) which will turn into (2). Then plug that back into the equation and you get (-1)-(2). And you get -3.