Question

(3x)-(9x²+1)
dou 5 estrelas pra quem responde ​

Answer 1

Explicação passo-a-passo:

9x²-1=3x-x?

10 x 2-3x-1=0 aplicando bháskara A=b²-4ac A=9-4(10)(-1)

4=9+40=495

X'=-b+V49/2*10 X'=3+7/20

X'=1/2

X"=3-7/20 X"=-4/20 X"=-1/5