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4.3x^2+-3.0x+-1.8=0
We add all the numbers together, and all the variables
4.3x^2-3x=0
a = 4.3; b = -3; c = 0;
Δ = b2-4ac
Δ = -32-4·4.3·0
Δ = 9
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{9}=3$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-3)-3}{2*4.3}=\frac{0}{8.6} =0 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-3)+3}{2*4.3}=\frac{6}{8.6} =3/4.3 $
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