1.8=(x^2-3)

Solution for 1.8=(x^2-3) equation:

1.8=(x^2-3)

We move all terms to the left:

1.8-((x^2-3))=0


We calculate terms in parentheses: -((x^2-3)), so:

(x^2-3)

We get rid of parentheses

x^2-3

Back to the equation:

-(x^2-3)


We get rid of parentheses

-x^2+3+1.8=0

We add all the numbers together, and all the variables

-1x^2+4.8=0

a = -1; b = 0; c = +4.8;
Δ = b2-4ac
Δ = 02-4·(-1)·4.8
Δ = 19.2
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-\sqrt{19.2}}{2*-1}=\frac{0-\sqrt{19.2}}{-2}
=-\frac{\sqrt{}}{-2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{19.2}}{2*-1}=\frac{0+\sqrt{19.2}}{-2}
=\frac{\sqrt{}}{-2}
$