(x-0.7)(x+0.7)=

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Solution for (x-0.7)(x+0.7)= equation: 


Simplifying
(x + -0.7)(x + 0.7) = 0

Reorder the terms:
(-0.7 + x)(x + 0.7) = 0

Reorder the terms:
(-0.7 + x)(0.7 + x) = 0

Multiply (-0.7 + x) * (0.7 + x)
(-0.7(0.7 + x) + x(0.7 + x)) = 0
((0.7 * -0.7 + x * -0.7) + x(0.7 + x)) = 0
((-0.49 + -0.7x) + x(0.7 + x)) = 0
(-0.49 + -0.7x + (0.7 * x + x * x)) = 0
(-0.49 + -0.7x + (0.7x + x2)) = 0

Combine like terms: -0.7x + 0.7x = 0.0
(-0.49 + 0.0 + x2) = 0
(-0.49 + x2) = 0

Solving
-0.49 + x2 = 0

Solving for variable 'x'.

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

Add '0.49' to each side of the equation.
-0.49 + 0.49 + x2 = 0 + 0.49

Combine like terms: -0.49 + 0.49 = 0.00
0.00 + x2 = 0 + 0.49
x2 = 0 + 0.49

Combine like terms: 0 + 0.49 = 0.49
x2 = 0.49

Simplifying
x2 = 0.49

Take the square root of each side:
x = {-0.7, 0.7}

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