x^2=15/16

Solution for x^2=15/16 equation:

x^2=15/16

We move all terms to the left:

x^2-(15/16)=0

We add all the numbers together, and all the variables

x^2-(+15/16)=0

We get rid of parentheses

x^2-15/16=0

We multiply all the terms by the denominator


x^2*16-15=0

Wy multiply elements

16x^2-15=0

a = 16; b = 0; c = -15;
Δ = b2-4ac
Δ = 02-4·16·(-15)
Δ = 960
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:

$\sqrt{\Delta}=\sqrt{960}=\sqrt{64*15}=\sqrt{64}*\sqrt{15}=8\sqrt{15}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-8\sqrt{15}}{2*16}=\frac{0-8\sqrt{15}}{32}
=-\frac{8\sqrt{15}}{32}
=-\frac{\sqrt{15}}{4}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+8\sqrt{15}}{2*16}=\frac{0+8\sqrt{15}}{32}
=\frac{8\sqrt{15}}{32}
=\frac{\sqrt{15}}{4}
$