A=7t^2-B

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Solution for A=7t^2-B equation: 



=7A^2-

We move all terms to the left:

-(7A^2-)=0

We get rid of parentheses

-7A^2+=0

We add all the numbers together, and all the variables

-7A^2=0

a = -7; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-7)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$A=\frac{-b}{2a}=\frac{0}{-14}=0$

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