a2=1/49

Solution for a2=1/49 equation:

a2=1/49

We move all terms to the left:

a2-(1/49)=0

We add all the numbers together, and all the variables

a2-(+1/49)=0

We add all the numbers together, and all the variables

a^2-(+1/49)=0

We get rid of parentheses

a^2-1/49=0

We multiply all the terms by the denominator


a^2*49-1=0

Wy multiply elements

49a^2-1=0

a = 49; b = 0; c = -1;
Δ = b2-4ac
Δ = 02-4·49·(-1)
Δ = 196
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{196}=14$
$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-14}{2*49}=\frac{-14}{98}
=-1/7
$
$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+14}{2*49}=\frac{14}{98}
=1/7
$