Question

Qual a raiz do polinômio p(x) = x2 - 3x + 2? (usando a formula de baskara)

Answer 1

∆=(-3)²-4.1.2
∆=9-8
∆=1

x=-(-3)±✓1/2

x¹=-3+1/2=2
x²=-3-1/2=-2

Answer 2

x²-3x+2=0
a=1 b=-3 c=2

∆=b²-4.a.c
∆=(-3)²-4.1.2
∆=9-8
∆=1

x=-b±√∆/2.a
x=-(-3)±√1/2.1
x=3±1/2
x'=3+1/2=4/2=2
x"=3-1/2=2/2=1

S={(1,2)}