31/4x+1*2x=65

Solution for 31/4x+1*2x=65 equation:

31/4x+1*2x=65

We move all terms to the left:

31/4x+1*2x-(65)=0


Domain of the equation: 4x!=0

x!=0/4

x!=0

x∈R


Wy multiply elements

31/4x+2x-65=0

We multiply all the terms by the denominator


2x*4x-65*4x+31=0

Wy multiply elements

8x^2-260x+31=0

a = 8; b = -260; c = +31;
Δ = b2-4ac
Δ = -2602-4·8·31
Δ = 66608
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:

$\sqrt{\Delta}=\sqrt{66608}=\sqrt{16*4163}=\sqrt{16}*\sqrt{4163}=4\sqrt{4163}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-260)-4\sqrt{4163}}{2*8}=\frac{260-4\sqrt{4163}}{16}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-260)+4\sqrt{4163}}{2*8}=\frac{260+4\sqrt{4163}}{16}
$