(7h+3)(7h-3)=

Solution for (7h+3)(7h-3)= equation:

Simplifying
(7h + 3)(7h + -3) = 0

Reorder the terms:
(3 + 7h)(7h + -3) = 0

Reorder the terms:
(3 + 7h)(-3 + 7h) = 0

Multiply (3 + 7h) * (-3 + 7h)
(3(-3 + 7h) + 7h * (-3 + 7h)) = 0
((-3 * 3 + 7h * 3) + 7h * (-3 + 7h)) = 0
((-9 + 21h) + 7h * (-3 + 7h)) = 0
(-9 + 21h + (-3 * 7h + 7h * 7h)) = 0
(-9 + 21h + (-21h + 49h2)) = 0

Combine like terms: 21h + -21h = 0
(-9 + 0 + 49h2) = 0
(-9 + 49h2) = 0

Solving
-9 + 49h2 = 0

Solving for variable 'h'.

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

Add '9' to each side of the equation.
-9 + 9 + 49h2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 49h2 = 0 + 9
49h2 = 0 + 9

Combine like terms: 0 + 9 = 9
49h2 = 9

Divide each side by '49'.
h2 = 0.1836734694

Simplifying
h2 = 0.1836734694

Take the square root of each side:
h = {-0.428571429, 0.428571429}