Question

$x {}^{2} - \times + \frac{1}{4} = 25$
ajuda ai galera assunto: Equacao do 2 grau completa​

Answer 1

x^2-x=25-1/4

x^2-x=100/4-1/4

x^2-x-99/4=0

a=1

b=-1

c=99/4

Delta=(-1)^2-4.1.(-99/4)

Delta=1+99

Delta=100

X=-(-1)+-raiz(100)/2.1

x=1-10/2

x1=-9/2

x2=11/2

Abraços.