Question

Qual o resultado dessa equação 5x²-6x+1=0 ? pfv

Answer 1

5x² -6x+1=0

a=5

b=-6

c=1

Δ=b²-4ac

Δ=(-6)²-4(5)(1)

Δ=36-20

Δ=16

$x={-b\pm\sqrt{\Delta} \over2a}={-(-6)\pm\sqrt{16} \over2.(5)}={6\pm4\over10}\\ \\ x'={6+4\over10}={10\over10}=1\\ \\ x"={6-4\over10}={2\over10}={1\over5}$