Alguém poderia resolver esta fatoração, explicando passo a passo? 6x² -5x -21.... Pergunta de ideia dePOKE1910

POKE1910 @POKE1910

January 2020 1 101 Report

Alguém poderia resolver esta fatoração, explicando passo a passo?
6x² -5x -21

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Biancakaroliny Pegue o valor a b e c

assim e
±ax²±bx±c

6x²-5x-21

a=6 b=-5 c=-21

aplicamos a fórmula

∆=b²-4.a.c
∆=(-5)²-4.6.(-21)
∆=25+504
∆=529

agora aplicaremos o baskara

x=-b±√∆/2.a
x=-(-5)±√529/2.6
x=5±23/12

x1=5+23/12=28/12
x2=5-23/12=-18/12

1 votes Thanks 2

Biancakaroliny de nada

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