Answer:
simplee really...
Step-by-step explanation:
You just need to plug those expressions inside the formula: it doesn't matter if they're expressions involving a variable instead of plain numbers: the formula becomes

If you want, you can simplify it by expanding the square and then multiply the two parenthesis:

Answer:
40 percent is right answer of 36 of 90
Answer:
the measure of the exterior angle is 87 degrees.
I think it’s d because it’s like similar