Raymond B. answered 09/25/21
Tutor
5
(2)
Math, microeconomics or criminal justice
x^2 + 2x + 26
add and decrease by 1
= x^2 + 2x + 1 -1 + 26
= x^2 + 2x +1 + 25
1st 2nd and 3rd are =
x+1 by x+1 = x^2 + 2x + 1