Question

usando a formula de bhaskara x²-5x-1=0​

Answer 1

Resposta:

x^2-5x-1=0 a)1

Δ=b^2-4ac b)-5

Δ=(-5)^2-4×1×(-1) c)-1

Δ=25-4×(-1)

Δ=25+4

Δ=29

X=-b+-√Δ/2a

X=-(-5)+-√29/2×1

X=+5+-√29/2

X'=5+√29/2

X"=5-29/2

S={5+√29/2, 5-√29/2}