(30+X)(30-X)=

Solution for (30+X)(30-X)= equation:

Simplifying
(30 + X)(30 + -1X) = 0

Multiply (30 + X) * (30 + -1X)
(30(30 + -1X) + X(30 + -1X)) = 0
((30 * 30 + -1X * 30) + X(30 + -1X)) = 0
((900 + -30X) + X(30 + -1X)) = 0
(900 + -30X + (30 * X + -1X * X)) = 0
(900 + -30X + (30X + -1X2)) = 0

Combine like terms: -30X + 30X = 0
(900 + 0 + -1X2) = 0
(900 + -1X2) = 0

Solving
900 + -1X2 = 0

Solving for variable 'X'.

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

Add '-900' to each side of the equation.
900 + -900 + -1X2 = 0 + -900

Combine like terms: 900 + -900 = 0
0 + -1X2 = 0 + -900
-1X2 = 0 + -900

Combine like terms: 0 + -900 = -900
-1X2 = -900

Divide each side by '-1'.
X2 = 900

Simplifying
X2 = 900

Take the square root of each side:
X = {-30, 30}