This is a difference of perfect squares.
(x+10)(x-10)
Answer:
5,9,2
Step-by-step explanation:
Answer:
-63x +28
Step-by-step explanation:
-7(9x-4)
We cannot solve, but we can simplify
Distribute
-7 * 9x -7 * (-4)
-63x +28
Answer:2
Step-by-step explanation:
Given
The derivative of a function is 
The slope at (2,9) is

the tangent at (2,9) is parallel to another tangent at (a,b) i.e. their slopes are equal

Answer:
A. 5W-21 B. -60+6W C. -7+2W
Step-by-step explanation: