(9t-1)(9t+1)=

Solution for (9t-1)(9t+1)= equation:

Simplifying
(9t + -1)(9t + 1) = 0

Reorder the terms:
(-1 + 9t)(9t + 1) = 0

Reorder the terms:
(-1 + 9t)(1 + 9t) = 0

Multiply (-1 + 9t) * (1 + 9t)
(-1(1 + 9t) + 9t * (1 + 9t)) = 0
((1 * -1 + 9t * -1) + 9t * (1 + 9t)) = 0
((-1 + -9t) + 9t * (1 + 9t)) = 0
(-1 + -9t + (1 * 9t + 9t * 9t)) = 0
(-1 + -9t + (9t + 81t2)) = 0

Combine like terms: -9t + 9t = 0
(-1 + 0 + 81t2) = 0
(-1 + 81t2) = 0

Solving
-1 + 81t2 = 0

Solving for variable 't'.

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

Add '1' to each side of the equation.
-1 + 1 + 81t2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 81t2 = 0 + 1
81t2 = 0 + 1

Combine like terms: 0 + 1 = 1
81t2 = 1

Divide each side by '81'.
t2 = 0.01234567901

Simplifying
t2 = 0.01234567901

Take the square root of each side:
t = {-0.111111111, 0.111111111}