Resposta :
y=[tex] x^{2} [/tex]- [tex] 3^{x} [/tex]-10=0 => x
-(-3)[tex] + - [tex] \sqrt{ (3)^{2}-4(1)(10) } [/tex] = 3+- [tex] \sqrt{9+40} [/tex]
_________________________________________ ________________
2(1) 2
3+- [tex] \sqrt{49} [/tex] = 3+-7 => [tex] x_{1} [/tex]= 3-7 = 5
_______________________ ______ _____
2 2 2
[tex] x_{2} [/tex]= 3+7 = -2
____
2
{-5,2}
-(-3)[tex] + - [tex] \sqrt{ (3)^{2}-4(1)(10) } [/tex] = 3+- [tex] \sqrt{9+40} [/tex]
_________________________________________ ________________
2(1) 2
3+- [tex] \sqrt{49} [/tex] = 3+-7 => [tex] x_{1} [/tex]= 3-7 = 5
_______________________ ______ _____
2 2 2
[tex] x_{2} [/tex]= 3+7 = -2
____
2
{-5,2}