1+3x(+9x)=60

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Solution for 1+3x(+9x)=60 equation:



1+3x(+9x)=60
We move all terms to the left:
1+3x(+9x)-(60)=0
We add all the numbers together, and all the variables
3x(+9x)-59=0
We multiply parentheses
27x^2-59=0
a = 27; b = 0; c = -59;
Δ = b2-4ac
Δ = 02-4·27·(-59)
Δ = 6372
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:
$\sqrt{\Delta}=\sqrt{6372}=\sqrt{36*177}=\sqrt{36}*\sqrt{177}=6\sqrt{177}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-6\sqrt{177}}{2*27}=\frac{0-6\sqrt{177}}{54} =-\frac{6\sqrt{177}}{54} =-\frac{\sqrt{177}}{9} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+6\sqrt{177}}{2*27}=\frac{0+6\sqrt{177}}{54} =\frac{6\sqrt{177}}{54} =\frac{\sqrt{177}}{9} $

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