Question

equaçao de 2° grau incompleta 4x(elevado a 2)-100=0

Answer 1

Resolva assim:

$4 x^{2} -100=0\\ \\ 4 x^{2} =100\\ \\ x^{2} =\frac{100}{4}\\ \\ x^{2} =25\\ \\ x=\pm \sqrt{25}\\ \\ x=\pm 5$

Answer 2

4x^2 - 100 = 0
4x^2 = 100
x^2 = 100/4
x = + - (raiz de) 25
x = + - 5