(4*4-7*7*V*V)+7*V*V=16

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Solution for (4*4-7*7*V*V)+7*V*V=16 equation: 


Simplifying
(4 * 4 + -7 * 7V * V) + 7V * V = 16

Multiply 4 * 4
(16 + -7 * 7V * V) + 7V * V = 16

Multiply -7 * 7
(16 + -49V * V) + 7V * V = 16

Multiply V * V
(16 + -49V2) + 7V * V = 16

Remove parenthesis around (16 + -49V2)
16 + -49V2 + 7V * V = 16

Multiply V * V
16 + -49V2 + 7V2 = 16

Combine like terms: -49V2 + 7V2 = -42V2
16 + -42V2 = 16

Add '-16' to each side of the equation.
16 + -16 + -42V2 = 16 + -16

Combine like terms: 16 + -16 = 0
0 + -42V2 = 16 + -16
-42V2 = 16 + -16

Combine like terms: 16 + -16 = 0
-42V2 = 0

Solving
-42V2 = 0

Solving for variable 'V'.

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

Divide each side by '-42'.
V2 = 0

Simplifying
V2 = 0

Take the square root of each side:
V = {0}

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