n^2=121/49

Solution for n^2=121/49 equation:

n^2=121/49

We move all terms to the left:

n^2-(121/49)=0

We add all the numbers together, and all the variables

n^2-(+121/49)=0

We get rid of parentheses

n^2-121/49=0

We multiply all the terms by the denominator


n^2*49-121=0

Wy multiply elements

49n^2-121=0

a = 49; b = 0; c = -121;
Δ = b2-4ac
Δ = 02-4·49·(-121)
Δ = 23716
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{23716}=154$
$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-154}{2*49}=\frac{-154}{98}
=-1+4/7
$
$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+154}{2*49}=\frac{154}{98}
=1+4/7
$