Question

ESCREVA A EQUACAO AX2+BX+C=0,QUANDO A)A=1,B=6,C=9

Answer 1

resolvendo

Δ=b² + 4ac
6² + 4 (6) (9)
36 + 216
Δ= 252

x = -b+- √Δ / 2a

x= - 6 +- √252 / 2(1)
x= -6 + 15,82/2
x' = 4,91

x''= -6-15,82/2
x''= -10,91