4a^2 − b^2 − 2a + b
Simplify

Step-by-step explanation:

Add the b and the a together

4a2-b2  

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

        A2 - AB + BA - B2 =

        A2 - AB + AB - B2 =

        A2 - B2

Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check :  4  is the square of  2  

Check :  a2  is the square of  a1  

Check :  b2  is the square of  b1  

Factorization is :       (2a + b)  •  (2a - b)  

Final result :

 (2a + b) • (2a - b)

you answer is a

step-by-step explanation:

i think it will be zero as slope has a formula of difference between initial and final distance divided by itz time interval