Factorize: 4m^2-y^2+4m+1​

(2m + 1 + y) (2m + 1 - y)

Step-by-step explanation:

steps are done in the above photo and i have also written the identifies

1. x= 11.7  μ = 7

2. z11.7= 1.3

3. Is 11.7 within a z-score of 3?

a. Yes because z11.7 < 3.

4. Which statement is true of z11.7?

b. z11.7 is between 1 and 2 standard deviations of the mean.