Question

Resolva as equações no caderno
2x²=50
6x²=0
-x²=16
9x²=36

Answer 1

Resposta:

$2x^{2} =50\\ \\ x^{2} =\frac{50}{2} \\ \\ x^{2} =25\\ \\ x=\sqrt{25} \\ \\ x=5\\ \\ \\ 6x^{2} =0\\ \\ x^{2} =\frac{0}{6} \\ \\ x^{2} =0\\ \\ x=\sqrt{0} \\ \\ x=0\\ \\ \\ -x^{2} =16\\ \\ (-x).(-x) =16\\ \\ +x^{2} =16\\ \\ x=\sqrt{16} \\ \\ x=4\\ \\ \\ 9x^{2} =36\\ \\ x^{2} =\frac{36}{9} \\ \\ x^{2} =4\\ \\ x=\sqrt{4} \\ \\ x=2$