Question

resolva -2x²+3x+5=0​

Answer 1

Resposta:

-2x²+3x+5= 0

x= -b±√b²-4.a.c/2.a

x= 3±√(3)²-4.(2).(5)/2.(2)

x= 3±√ 9-40/4

x= 3±√31/4

x¹= -3-31/4

x¹= -34/4

x¹=8,5

x²= +3-31/4

x²= 29/4

x²= 7,25

S= (8,5 e 7,25)