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-3x(3x-16)=0
We multiply parentheses
-9x^2+48x=0
a = -9; b = 48; c = 0;
Δ = b2-4ac
Δ = 482-4·(-9)·0
Δ = 2304
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{2304}=48$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(48)-48}{2*-9}=\frac{-96}{-18} =5+1/3 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(48)+48}{2*-9}=\frac{0}{-18} =0 $
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