Question

y ao quadrado - 4y + 3 = 0

Answer 1

∆=b²-4ac
∆=-4²-4.1.3
∆=16-12
∆=4. x=-b+-√∆/2a
x=+4+-2/2
x=4+2/2
x'=3. x"=4-2/2
x"=1

Answer 2

y²-4y+3=0

Δ=b²-4ac

Δ=(-4)²-4(1)(3)

Δ=16-12

Δ=4

y'=-b+√Δ/2a

y'=-(-4)+√4/2(1)

y'=4+2/2

y'=6/2

y'=3

y''=-b-√Δ/2a

y''=-(-4)-√4/2(1)

y''=4-2/2

y''=2/2

y''=1

solução=(3,1)