-10x+5-4(x-1)=-4x(9x-4)+4

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Solution for -10x+5-4(x-1)=-4x(9x-4)+4 equation:



-10x+5-4(x-1)=-4x(9x-4)+4
We move all terms to the left:
-10x+5-4(x-1)-(-4x(9x-4)+4)=0
We multiply parentheses
-10x-4x-(-4x(9x-4)+4)+4+5=0
We calculate terms in parentheses: -(-4x(9x-4)+4), so:
-4x(9x-4)+4
We multiply parentheses
-36x^2+16x+4
Back to the equation:
-(-36x^2+16x+4)
We add all the numbers together, and all the variables
-(-36x^2+16x+4)-14x+9=0
We get rid of parentheses
36x^2-16x-14x-4+9=0
We add all the numbers together, and all the variables
36x^2-30x+5=0
a = 36; b = -30; c = +5;
Δ = b2-4ac
Δ = -302-4·36·5
Δ = 180
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:
$\sqrt{\Delta}=\sqrt{180}=\sqrt{36*5}=\sqrt{36}*\sqrt{5}=6\sqrt{5}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-30)-6\sqrt{5}}{2*36}=\frac{30-6\sqrt{5}}{72} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-30)+6\sqrt{5}}{2*36}=\frac{30+6\sqrt{5}}{72} $

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