Question

Resolva as equações utilisando a formula de bhaskara 5x²-45=0

Answer 1

Resposta:

ax²+bx+c=0

$x'=\frac{-b+\sqrt{a^{2} -4ac} }{2a}$

$x''=\frac{-b-\sqrt{a^{2} -4ac} }{2a}$

5x²-0*x-45=0

a=5 , b=0  e c=-45

x'=[-0+√(0²-4*5*(-45))]/10 =√900/10 =30/10=3

x''=[-0-√(0²-4*5*(-45))]/10 =-√900/10 =-30/10=-3

x'=3  e x''=-3