A (X-2).(X-3).(X+1) =
(x²-3x-2x+6).(x+1)
(x²-5x+6).(x+1)
x³+x²-5x²-5x+6x+6
x³-4x²+x+6
B (X-3).(X+1).(X+5)
(x²+x-3x-3).(x+5)
x³+5x²+x²+5x-3x²-15x-3x-15
x³+3x²-13x-15
15/09/22
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a) x³-4x²+x+6
b) x³+3x²-13x-15
A (X-2).(X-3).(X+1) =
(x²-3x-2x+6).(x+1)
(x²-5x+6).(x+1)
x³+x²-5x²-5x+6x+6
x³-4x²+x+6
B (X-3).(X+1).(X+5)
(x²+x-3x-3).(x+5)
x³+5x²+x²+5x-3x²-15x-3x-15
x³+3x²-13x-15
Boa sorte!!!❤️❤️❤️
15/09/22