(v-1.4)(v+1.4)=

Solution for (v-1.4)(v+1.4)= equation:

Simplifying
(v + -1.4)(v + 1.4) = 0

Reorder the terms:
(-1.4 + v)(v + 1.4) = 0

Reorder the terms:
(-1.4 + v)(1.4 + v) = 0

Multiply (-1.4 + v) * (1.4 + v)
(-1.4(1.4 + v) + v(1.4 + v)) = 0
((1.4 * -1.4 + v * -1.4) + v(1.4 + v)) = 0
((-1.96 + -1.4v) + v(1.4 + v)) = 0
(-1.96 + -1.4v + (1.4 * v + v * v)) = 0
(-1.96 + -1.4v + (1.4v + v2)) = 0

Combine like terms: -1.4v + 1.4v = 0.0
(-1.96 + 0.0 + v2) = 0
(-1.96 + v2) = 0

Solving
-1.96 + v2 = 0

Solving for variable 'v'.

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

Add '1.96' to each side of the equation.
-1.96 + 1.96 + v2 = 0 + 1.96

Combine like terms: -1.96 + 1.96 = 0.00
0.00 + v2 = 0 + 1.96
v2 = 0 + 1.96

Combine like terms: 0 + 1.96 = 1.96
v2 = 1.96

Simplifying
v2 = 1.96

Take the square root of each side:
v = {-1.4, 1.4}