(-9x²-2x) - (-9x²-3x) = (-9x²-2x) +(9x²+3x) = -9x²-2x+9x²+3x = (-9x²+9x²)+(-2x+3x) = x
Answer:Renee Descartes was the person that invented slope of a line
Step-by-step explanation:Renee Descartes was the person that invented slope of a line
<em>The question is not clearly readable, but I'm assuming the expression which makes more sense, so you can have a clue</em>
Answer:

Step-by-step explanation:
<u>Powers of The Imaginary Unit</u>
The imaginary unit i is defined as
The first powers of i are





And so on the cycle repeats every four numbers. To find the value of
we can find the remainder of 96/4=0. So 
The given expression is

Factoring

Since 

The required value is 0
Answer:
Step-by-step explanation: you just need to find the greatest factors and least multiple then do it to two numbers