Question

resolver a equaçao do 2 grau x 2 – 4x/5 = 0,2 por favor

Answer 1

Resposta:

Explicação passo-a-passo:

x 2 – 4x/5 = 0,2

X²-4/5x-2/10=0

X²-4/5x-1/5=0

∆=(-4/5)²-4(1)(-1/5)

∆=16/25+4/5

∆=16+20/25

∆=36/25

X=-b+-√∆/2a

X1=-(-4/5)-√36/25/2

X1=4/5-6/5/2

X1=-1/5 /2

X1=-1/10

X2=-(-4/5)+6/5/2

X2=4/5+6/5 /2

X2=10/5 /2

X2=2/2

X2=1