Calcule:
(x+1).(x+2).(x+3)+(x+2).(x+3).(x+4)
Por favor, resposta com cálculos.
Soluções para a tarefa
Respondido por
2
(x+1).(x+2).(x+3) + (x+2).(x+3).(x+4) = multiplicando 2 ( )
\ / \ /
(x.x +x.2 +1.x +1.2).(x +3) + (x.x +x.3 +2.x +2.3).(x+4) =
(x² +2x +x +2 ) . (x +3) + (x² +3x +2x +6 ) .(x +4) =
(x² +3x +2 ) . (x +3) + (x² +5x +6 ) . (x +4) =
(x².x + x².3 + 3x.x + 3x.3 +2.x +2.6) + (x².x +x².4 +5x.x +5x.4 +6.x + 6.4) =
( x³ +3x² +3x² +9x +2x +12) + ( x³ +4x² +5x² +20x +6x +24) =
( x³ +6x² +11x +12) + ( x³ +9x² +26x +24) =
x³ +6x² +11x +12 + x³ +9x² +26x +24 =
x³ +x³ +6x² +9x² +11x +26x +12 +24 =
2x³ +15x² +37x +36
\ / \ /
(x.x +x.2 +1.x +1.2).(x +3) + (x.x +x.3 +2.x +2.3).(x+4) =
(x² +2x +x +2 ) . (x +3) + (x² +3x +2x +6 ) .(x +4) =
(x² +3x +2 ) . (x +3) + (x² +5x +6 ) . (x +4) =
(x².x + x².3 + 3x.x + 3x.3 +2.x +2.6) + (x².x +x².4 +5x.x +5x.4 +6.x + 6.4) =
( x³ +3x² +3x² +9x +2x +12) + ( x³ +4x² +5x² +20x +6x +24) =
( x³ +6x² +11x +12) + ( x³ +9x² +26x +24) =
x³ +6x² +11x +12 + x³ +9x² +26x +24 =
x³ +x³ +6x² +9x² +11x +26x +12 +24 =
2x³ +15x² +37x +36
Respondido por
2
Resposta:
Explicação passo-a-passo:
x + 4 para x = -3
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