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3x*3=9x^2
We move all terms to the left:
3x*3-(9x^2)=0
determiningTheFunctionDomain -9x^2+3x*3=0
Wy multiply elements
-9x^2+9x=0
a = -9; b = 9; c = 0;
Δ = b2-4ac
Δ = 92-4·(-9)·0
Δ = 81
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{81}=9$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(9)-9}{2*-9}=\frac{-18}{-18} =1 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(9)+9}{2*-9}=\frac{0}{-18} =0 $
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