Question

3x²-7+4=0 me ajuda ;-;

Answer 1

Dada a equação:

$\mathsf{3x^2-7+4=0}$

Isolando a variável $\mathsf{x}$ teremos:

$\mathsf{3x^2=7-4}\\\\\mathsf{3x^2=3}\\\\\mathsf{x^2=\dfrac{3}{3}}\\\\\mathsf{x^2=1}\\\\\mathsf{x=\pm \sqrt{1}}\\\\\boxed{\mathsf{x=\pm 1}}\: \: \checkmark$