Question

1 dada as funçães pergunta a) - x + 14x - 33 =0 b) x - 10x + 24 = 0 c) - x - 3x + 4 = 0

Answer 1

a) -x+14x-33=0
Δ=b²-4ac
Δ= 14²-4.(-1)(-33)
Δ= 196-132
Δ=64
x'= -14-8/-2       x'= 11          x¨= -14+8/-2       x¨= 3

b) x-10x+24=0
Δ=10²-4.1.24
Δ=100-96
Δ=4

x'= -24-2/2       x'= -13             x¨= -24+2/2       x¨= -11

c)  -x-3x+4=0
Δ= (-3)²-4.(-1).4
Δ= 9-16
Δ=-7