Question

grafico da funçao do 2grau e conta de f(x)= x2 -9x +25

Answer 1

x²- 9x +25

Δ=b²-4ac

Δ=(-9)²-4*1*25

Δ=81-100

Δ=9

x1=-b+$\sqrt{x}$/2a

x1=(9+3)/2

x1=12/2

x1=6

x2=-b-$\sqrt{x}$/2a

x2=(9-3)/3

x2=6/3

x2=2