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4x*3.3x=11.9
We move all terms to the left:
4x*3.3x-(11.9)=0
We add all the numbers together, and all the variables
4x*3.3x-11.9=0
Wy multiply elements
12x^2-11.9=0
a = 12; b = 0; c = -11.9;
Δ = b2-4ac
Δ = 02-4·12·(-11.9)
Δ = 571.2
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)-\sqrt{571.2}}{2*12}=\frac{0-\sqrt{571.2}}{24} =-\frac{\sqrt{}}{24} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{571.2}}{2*12}=\frac{0+\sqrt{571.2}}{24} =\frac{\sqrt{}}{24} $
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