Question

x elevado a 2 -6x = -9 Me respondeem pfvrr

Answer 1

Resposta:

$x^{2} -6x=-9~~~~~~equacao~do~segundo~grau\\ \\ x^{2} -6x+9=0\\ \\ delta=b^{2} -4.a.c\\ \\ delta=36-4.1.9\\ \\ delta=36-36=0\\ \\ Formula~de~Bhaskara\\ \\ x=\frac{-b+-\sqrt{delta} }{2.a} \\ \\ x=\frac{6+-0}{2} \\ \\ x=\frac{6}{2} \\ \\ x=3$