(7y-2)(7y+2)=

Solution for (7y-2)(7y+2)= equation:

Simplifying
(7y + -2)(7y + 2) = 0

Reorder the terms:
(-2 + 7y)(7y + 2) = 0

Reorder the terms:
(-2 + 7y)(2 + 7y) = 0

Multiply (-2 + 7y) * (2 + 7y)
(-2(2 + 7y) + 7y * (2 + 7y)) = 0
((2 * -2 + 7y * -2) + 7y * (2 + 7y)) = 0
((-4 + -14y) + 7y * (2 + 7y)) = 0
(-4 + -14y + (2 * 7y + 7y * 7y)) = 0
(-4 + -14y + (14y + 49y2)) = 0

Combine like terms: -14y + 14y = 0
(-4 + 0 + 49y2) = 0
(-4 + 49y2) = 0

Solving
-4 + 49y2 = 0

Solving for variable 'y'.

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

Add '4' to each side of the equation.
-4 + 4 + 49y2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 49y2 = 0 + 4
49y2 = 0 + 4

Combine like terms: 0 + 4 = 4
49y2 = 4

Divide each side by '49'.
y2 = 0.08163265306

Simplifying
y2 = 0.08163265306

Take the square root of each side:
y = {-0.285714286, 0.285714286}