z^2-0.16=0

Solution for z^2-0.16=0 equation:

z^2-0.16=0

a = 1; b = 0; c = -0.16;
Δ = b2-4ac
Δ = 02-4·1·(-0.16)
Δ = 0.64
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$z_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$z_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$z_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-\sqrt{0.64}}{2*1}=\frac{0-\sqrt{0.64}}{2}
=-\frac{\sqrt{}}{2}
$
$z_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{0.64}}{2*1}=\frac{0+\sqrt{0.64}}{2}
=\frac{\sqrt{}}{2}
$