Question

Aplicando a formula de Bhaskara, resolva as seguintes equações do 2° grau ​

Answer 1

a)

x=−(−7)±(−7)2−4×(3)×(4)−−−−−−−−−−−−−−−−−−√2×(3)⇔  

x=7±49−(48)−−−−−−−−√6⇔

x=7±1–√6⇔

x=7+16∨x=7−16⇔

x=86∨x=66

S={1.3333,1}

b)

x=−(−12)±(−12)2−4×(9)×(4)−−−−−−−−−−−−−−−−−−−√2×(9)⇔

x=12±144−(144)−−−−−−−−−−√18⇔

x=12±0–√18⇔

x=12+018⇔

x=1218

S={0.6667}

c)

x=−(3)±(3)2−4×(5)×(5)−−−−−−−−−−−−−−−−√2×(5)⇔  

x=−3±9−(100)−−−−−−−−√10⇔

x=−3±−91−−−−√10⇔