(9t-4)(9t+4)=

Solution for (9t-4)(9t+4)= equation:

Simplifying
(9t + -4)(9t + 4) = 0

Reorder the terms:
(-4 + 9t)(9t + 4) = 0

Reorder the terms:
(-4 + 9t)(4 + 9t) = 0

Multiply (-4 + 9t) * (4 + 9t)
(-4(4 + 9t) + 9t * (4 + 9t)) = 0
((4 * -4 + 9t * -4) + 9t * (4 + 9t)) = 0
((-16 + -36t) + 9t * (4 + 9t)) = 0
(-16 + -36t + (4 * 9t + 9t * 9t)) = 0
(-16 + -36t + (36t + 81t2)) = 0

Combine like terms: -36t + 36t = 0
(-16 + 0 + 81t2) = 0
(-16 + 81t2) = 0

Solving
-16 + 81t2 = 0

Solving for variable 't'.

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

Add '16' to each side of the equation.
-16 + 16 + 81t2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + 81t2 = 0 + 16
81t2 = 0 + 16

Combine like terms: 0 + 16 = 16
81t2 = 16

Divide each side by '81'.
t2 = 0.1975308642

Simplifying
t2 = 0.1975308642

Take the square root of each side:
t = {-0.444444444, 0.444444444}