t^2-4t+4=1/4

Solution for t^2-4t+4=1/4 equation:

t^2-4t+4=1/4

We move all terms to the left:

t^2-4t+4-(1/4)=0

We add all the numbers together, and all the variables

t^2-4t+4-(+1/4)=0

We get rid of parentheses

t^2-4t+4-1/4=0

We multiply all the terms by the denominator


t^2*4-4t*4-1+4*4=0

We add all the numbers together, and all the variables

t^2*4-4t*4+15=0

Wy multiply elements

4t^2-16t+15=0

a = 4; b = -16; c = +15;
Δ = b2-4ac
Δ = -162-4·4·15
Δ = 16
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$t_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$t_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{16}=4$
$t_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-16)-4}{2*4}=\frac{12}{8}
=1+1/2
$
$t_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-16)+4}{2*4}=\frac{20}{8}
=2+1/2
$