(0.35-x)(0.25-X)=0

Solution for (0.35-x)(0.25-X)=0 equation:

(0.35-x)(0.25-x)=0

We add all the numbers together, and all the variables

(-1x+0.35)(-1x+0.25)=0

We multiply parentheses ..

(+x^2-0.25x-0.35x+0.0875)=0

We get rid of parentheses

x^2-0.25x-0.35x+0.0875=0

We add all the numbers together, and all the variables

x^2-0.6x+0.0875=0

a = 1; b = -0.6; c = +0.0875;
Δ = b2-4ac
Δ = -0.62-4·1·0.0875
Δ = 0.01
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-0.6)-\sqrt{0.01}}{2*1}=\frac{0.6-\sqrt{0.01}}{2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-0.6)+\sqrt{0.01}}{2*1}=\frac{0.6+\sqrt{0.01}}{2}
$