Question

resolva as questão f (x)=3x ao quadrado -2x-11​

Answer 1

f(x)= 3x²-2x-11

a= 3

b=-2

c=-11

∆=b²-4ac

∆=(-2)²-4.(3).(-11)

∆= 4 + 12

∆= 16

x=-b ± ✓∆ = -(-2) ± ✓16 = 2 ± 4

2a 2.3 6

x'= 2 + 4 = 6 = 1

6 6

x"= 2 - 4 = -2

6 6