(11p+9)(11p-9)=

Solution for (11p+9)(11p-9)= equation:

Simplifying
(11p + 9)(11p + -9) = 0

Reorder the terms:
(9 + 11p)(11p + -9) = 0

Reorder the terms:
(9 + 11p)(-9 + 11p) = 0

Multiply (9 + 11p) * (-9 + 11p)
(9(-9 + 11p) + 11p * (-9 + 11p)) = 0
((-9 * 9 + 11p * 9) + 11p * (-9 + 11p)) = 0
((-81 + 99p) + 11p * (-9 + 11p)) = 0
(-81 + 99p + (-9 * 11p + 11p * 11p)) = 0
(-81 + 99p + (-99p + 121p2)) = 0

Combine like terms: 99p + -99p = 0
(-81 + 0 + 121p2) = 0
(-81 + 121p2) = 0

Solving
-81 + 121p2 = 0

Solving for variable 'p'.

Move all terms containing p to the left, all other terms to the right.

Add '81' to each side of the equation.
-81 + 81 + 121p2 = 0 + 81

Combine like terms: -81 + 81 = 0
0 + 121p2 = 0 + 81
121p2 = 0 + 81

Combine like terms: 0 + 81 = 81
121p2 = 81

Divide each side by '121'.
p2 = 0.6694214876

Simplifying
p2 = 0.6694214876

Take the square root of each side:
p = {-0.818181818, 0.818181818}