Question

-x²+3x+10=0 * me ajudeeeem

Answer 1

Resposta:

S={-2;5}

Explicação passo-a-passo:

-x² +3x +10=0

a= -1

b=3

c=10

DELTA:

∆= b² -4ac

∆= 3² -4.(-1).10

∆= 9 +40

∆= 49

BASKARA:

x= -b +-√∆/2a

x= -3 +-√49/ 2.-1

x= -3 +-7/ -2

x'= -3 +7/ -2

x'= 4/-2

x'= -2

x"= -3 -7/ -2

x"= -10/-2

x"= 5