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250x*0.997^x-55x=0
We add all the numbers together, and all the variables
-55x+250x*0.997^x=0
Wy multiply elements
0x^2-55x=0
We add all the numbers together, and all the variables
x^2-55x=0
a = 1; b = -55; c = 0;
Δ = b2-4ac
Δ = -552-4·1·0
Δ = 3025
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{3025}=55$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-55)-55}{2*1}=\frac{0}{2} =0 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-55)+55}{2*1}=\frac{110}{2} =55 $
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