10x^2=14-5x

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Solution for 10x^2=14-5x equation:



10x^2=14-5x
We move all terms to the left:
10x^2-(14-5x)=0
We add all the numbers together, and all the variables
10x^2-(-5x+14)=0
We get rid of parentheses
10x^2+5x-14=0
a = 10; b = 5; c = -14;
Δ = b2-4ac
Δ = 52-4·10·(-14)
Δ = 585
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:
$\sqrt{\Delta}=\sqrt{585}=\sqrt{9*65}=\sqrt{9}*\sqrt{65}=3\sqrt{65}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(5)-3\sqrt{65}}{2*10}=\frac{-5-3\sqrt{65}}{20} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(5)+3\sqrt{65}}{2*10}=\frac{-5+3\sqrt{65}}{20} $

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