(3a-6b)(3a+6b)=

Solution for (3a-6b)(3a+6b)= equation:

Simplifying
(3a + -6b)(3a + 6b) = 0

Multiply (3a + -6b) * (3a + 6b)
(3a * (3a + 6b) + -6b * (3a + 6b)) = 0
((3a * 3a + 6b * 3a) + -6b * (3a + 6b)) = 0

Reorder the terms:
((18ab + 9a2) + -6b * (3a + 6b)) = 0
((18ab + 9a2) + -6b * (3a + 6b)) = 0
(18ab + 9a2 + (3a * -6b + 6b * -6b)) = 0
(18ab + 9a2 + (-18ab + -36b2)) = 0

Reorder the terms:
(18ab + -18ab + 9a2 + -36b2) = 0

Combine like terms: 18ab + -18ab = 0
(0 + 9a2 + -36b2) = 0
(9a2 + -36b2) = 0

Solving
9a2 + -36b2 = 0

Solving for variable 'a'.

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

Add '36b2' to each side of the equation.
9a2 + -36b2 + 36b2 = 0 + 36b2

Combine like terms: -36b2 + 36b2 = 0
9a2 + 0 = 0 + 36b2
9a2 = 0 + 36b2
Remove the zero:
9a2 = 36b2

Divide each side by '9'.
a2 = 4b2

Simplifying
a2 = 4b2

Take the square root of each side:
a = {-2b, 2b}