Question

Qual a raíz de 2x²-50=0 ?

Answer 1

2x² - 50=0    2x² = 50    x² = 50/2    x² = 25    x= √25    x = 5

Answer 2

$2x^{2} =50; x^{2} = \frac{50}{2} --\ \textgreater \ x^{2} =25--\ \textgreater \ x=+/- \sqrt{25};x =+/-5$