Answer:
it's A
Step-by-step explanation:
What 3D figure/shape is it?
Answer:
<h2>
x
- x - 6</h2><h2 />
Step-by-step explanation:

Multiply each term in the first parentheses by each term in the second parentheses ( FOIL)

Calculate the product

Collect like terms

Hope this helps..
Best regards!
Answer:
b
Step-by-step explanation:
B. Y= (x - 10) ^ 4 - 81 OR y = x^4 - 20x +91
Yeah not just one letter but two letters perpendicular to another two letters. Each 2 letters like AB is a straight line which is crossed by another 2 letters making it perpendicular.