Resposta:
b) (2, -5)
Explicação passo a passo:
Resolvendo pela fórmula de Bhaskara:
a = 1 | b = 3 | c = -10
[tex]\frac{-3 +/-\sqrt{3^{2} - 4 . 1 . (-10) } }{2.1}\\\\\frac{-3 +/- \sqrt{9 - 4. (-10)} }{2}\\\\\frac{-3 +/- \sqrt{9 + 40} }{2}\\\\\frac{-3 +/- \sqrt{49} }{2}\\\\\frac{-3 +/- 7}{2}\\\\x' = \frac{-3 + 7}{2} = \frac{4}{2} = 2\\\\x" = \frac{-3-7}{2} = \frac{-10}{2} = -5[/tex]
BONS ESTUDOS!!!!
