Question

formula de baskara de x²-225=0​

Answer 1

Resposta:

S={( -15 , +15)}

Explicação passo-a-passo:

x²-225=0

a=1 b=0 c=-225

∆=b²-4.a.c

∆=(0)²-4.(1).(-225)

∆=0+900

∆=900

x'=[-(0)+√900]/2.(1)

x'=[+30]/2

x'=+15

x"=[-(0)-√900]/2.(1)

x"=[-30]/2

x"=-15