Question

Resolva 9s^2-9s-270=0

Answer 1

9s² - 9s - 270 = 0

Vamos calcular o delta agora:
Δ =  b² - 4 .a .c
Δ =  (-9)² - 4 .9 .(-270)
Δ =  81 + 9720
Δ =  9801

Vamos calcular o x ( Fórmula de Bhaskara ):

x´= -b+ √ Δ / 2.a= -(-9) + √9801 / 2.9= 9 + 99 / 18= 108/18= 6
x''= -b- √ Δ / 2.a= -(-9) - √9801 / 2.9= 9 - 99 / 18= 90/18= 5