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110*7/22=x*x
We move all terms to the left:
110*7/22-(x*x)=0
We add all the numbers together, and all the variables
-(+x*x)+110*7/22=0
We get rid of parentheses
-x*x+110*7/22=0
We multiply all the terms by the denominator
-(x*x)*22+110*7=0
We add all the numbers together, and all the variables
-(+x*x)*22+110*7=0
We add all the numbers together, and all the variables
-(+x*x)*22+770=0
We multiply parentheses
-22x^2+770=0
a = -22; b = 0; c = +770;
Δ = b2-4ac
Δ = 02-4·(-22)·770
Δ = 67760
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{67760}=\sqrt{1936*35}=\sqrt{1936}*\sqrt{35}=44\sqrt{35}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-44\sqrt{35}}{2*-22}=\frac{0-44\sqrt{35}}{-44} =-\frac{44\sqrt{35}}{-44} =-\frac{\sqrt{35}}{-1} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+44\sqrt{35}}{2*-22}=\frac{0+44\sqrt{35}}{-44} =\frac{44\sqrt{35}}{-44} =\frac{\sqrt{35}}{-1} $
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