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9x^2+50=219
We move all terms to the left:
9x^2+50-(219)=0
We add all the numbers together, and all the variables
9x^2-169=0
a = 9; b = 0; c = -169;
Δ = b2-4ac
Δ = 02-4·9·(-169)
Δ = 6084
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{6084}=78$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-78}{2*9}=\frac{-78}{18} =-4+1/3 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+78}{2*9}=\frac{78}{18} =4+1/3 $
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