25x2-121=0

Solution for 25x2-121=0 equation:

25x^2-121=0

a = 25; b = 0; c = -121;
Δ = b2-4ac
Δ = 02-4·25·(-121)
Δ = 12100
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{12100}=110$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-110}{2*25}=\frac{-110}{50}
=-2+1/5
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+110}{2*25}=\frac{110}{50}
=2+1/5
$