Question

ngm me responde aki, eu imploro :(
RESOLVA AS EQUAÇÕES COMPLETAS
a)x²-5x-6=0
b)x²-x-12=0
c)x²-7x+10=0
d)x²-5x+6=0 ​​

Answer 1

Resposta:

Explicação passo a passo:

delta e bhaskara

-b+-√b²-4.a.c/2.a

a)-(-5)+-√(-5)²-4.1.6/2.1

5+-√25-24/2

5+-√1/2

x+=5+1/2=6/2=3

x-=5-1/2=4/2=2

b)-(-8)+-√(-8)²-4.1.12/2.1

8+-√64-48/2

8+-√16/2

x+=8+4/2=12/2=6

x-=8-4/2=4/2=2

c)2+-√2²-4.1.(-8)/2.1

2+-√4+32/2

2+-√36/2

x+=2+6/2=8/2=4

x-=2-6/2=-4/2=-2

e assim por diante

d)x+=2,5+1,32i

x-=2,5-1,32i