(3s+5)(3s-5)=

Solution for (3s+5)(3s-5)= equation:

Simplifying
(3s + 5)(3s + -5) = 0

Reorder the terms:
(5 + 3s)(3s + -5) = 0

Reorder the terms:
(5 + 3s)(-5 + 3s) = 0

Multiply (5 + 3s) * (-5 + 3s)
(5(-5 + 3s) + 3s * (-5 + 3s)) = 0
((-5 * 5 + 3s * 5) + 3s * (-5 + 3s)) = 0
((-25 + 15s) + 3s * (-5 + 3s)) = 0
(-25 + 15s + (-5 * 3s + 3s * 3s)) = 0
(-25 + 15s + (-15s + 9s2)) = 0

Combine like terms: 15s + -15s = 0
(-25 + 0 + 9s2) = 0
(-25 + 9s2) = 0

Solving
-25 + 9s2 = 0

Solving for variable 's'.

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

Add '25' to each side of the equation.
-25 + 25 + 9s2 = 0 + 25

Combine like terms: -25 + 25 = 0
0 + 9s2 = 0 + 25
9s2 = 0 + 25

Combine like terms: 0 + 25 = 25
9s2 = 25

Divide each side by '9'.
s2 = 2.777777778

Simplifying
s2 = 2.777777778

Take the square root of each side:
s = {-1.666666667, 1.666666667}