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x*9x-324=0
Wy multiply elements
9x^2-324=0
a = 9; b = 0; c = -324;
Δ = b2-4ac
Δ = 02-4·9·(-324)
Δ = 11664
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{11664}=108$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-108}{2*9}=\frac{-108}{18} =-6 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+108}{2*9}=\frac{108}{18} =6 $
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