0=4x2+10x+1

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Solution for 0=4x2+10x+1 equation:



0=4x^2+10x+1
We move all terms to the left:
0-(4x^2+10x+1)=0
We add all the numbers together, and all the variables
-(4x^2+10x+1)=0
We get rid of parentheses
-4x^2-10x-1=0
a = -4; b = -10; c = -1;
Δ = b2-4ac
Δ = -102-4·(-4)·(-1)
Δ = 84
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:
$\sqrt{\Delta}=\sqrt{84}=\sqrt{4*21}=\sqrt{4}*\sqrt{21}=2\sqrt{21}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-10)-2\sqrt{21}}{2*-4}=\frac{10-2\sqrt{21}}{-8} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-10)+2\sqrt{21}}{2*-4}=\frac{10+2\sqrt{21}}{-8} $

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