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

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

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

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

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

Solving
-9 + 49p2 = 0

Solving for variable 'p'.

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

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

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

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

Divide each side by '49'.
p2 = 0.1836734694

Simplifying
p2 = 0.1836734694

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