Question

escreva na forma fatorada a função f(x)=3x²‐15x+18​

Answer 1

3x²‐15x+18

3(x² -5x +6)

3(x-2).(x-3)

Answer 2

∆=b^2-4×a×c

∆=(-15)^2-4×3×18

∆=225-216

∆=9

x=-b+-√∆/2×a

x=-(-15)+-√9/2×3

x=+15+-3/6

x'=15+3/6

x'=18/6

x'=3

x'=15-3/6

x'=12/6

x'=2

Forma fatorada:

a(x-x')(x-x")=0

3(x-3)(x-2)=0