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(6x)2+(7x+11)2=360
We move all terms to the left:
(6x)2+(7x+11)2-(360)=0
We add all the numbers together, and all the variables
6x^2+(7x+11)2-360=0
We multiply parentheses
6x^2+14x+22-360=0
We add all the numbers together, and all the variables
6x^2+14x-338=0
a = 6; b = 14; c = -338;
Δ = b2-4ac
Δ = 142-4·6·(-338)
Δ = 8308
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{8308}=\sqrt{4*2077}=\sqrt{4}*\sqrt{2077}=2\sqrt{2077}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(14)-2\sqrt{2077}}{2*6}=\frac{-14-2\sqrt{2077}}{12} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(14)+2\sqrt{2077}}{2*6}=\frac{-14+2\sqrt{2077}}{12} $
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