(3p-7)(3p+7)=

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

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

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

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

Multiply (-7 + 3p) * (7 + 3p)
(-7(7 + 3p) + 3p * (7 + 3p)) = 0
((7 * -7 + 3p * -7) + 3p * (7 + 3p)) = 0
((-49 + -21p) + 3p * (7 + 3p)) = 0
(-49 + -21p + (7 * 3p + 3p * 3p)) = 0
(-49 + -21p + (21p + 9p2)) = 0

Combine like terms: -21p + 21p = 0
(-49 + 0 + 9p2) = 0
(-49 + 9p2) = 0

Solving
-49 + 9p2 = 0

Solving for variable 'p'.

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

Add '49' to each side of the equation.
-49 + 49 + 9p2 = 0 + 49

Combine like terms: -49 + 49 = 0
0 + 9p2 = 0 + 49
9p2 = 0 + 49

Combine like terms: 0 + 49 = 49
9p2 = 49

Divide each side by '9'.
p2 = 5.444444444

Simplifying
p2 = 5.444444444

Take the square root of each side:
p = {-2.333333333, 2.333333333}