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Giulia77
@Giulia77
December 2019
2
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Qual é a forma fatorada de:
x²+5x-24
e
x²+2x-63
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eva109
Use a soma e o produto! S =5 e P=-24 -3 e 8 (x-3)(x+8) O OUTRO S =2 e P=-63 9 e -7 (x+9)(x-7)
1 votes
Thanks 1
marcelo612
( a) ( x ) 2 + 5x - 24 = 0
∆ = 25 + 96
∆ = 121
X 1 = - 5 + 11 / 2
X 1 = 3
X2 = - 5 - 11 / 2
X2 = - 8
forma fatorada :
( X - 3 ) * ( X + 8 )
b) ( x ) 2 + 2x - 63 = 0
∆ = 4 + 252
∆ = 256
X 1 = - 2 + 16 / 2
X 1 = 7
X2 = - 2 - 16 / 2
X2 = - 9
forma fatorada:
( X - 7 ) * ( X + 9)
0 votes
Thanks 1
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Lista de comentários
∆ = 25 + 96
∆ = 121
X 1 = - 5 + 11 / 2
X 1 = 3
X2 = - 5 - 11 / 2
X2 = - 8
forma fatorada :
( X - 3 ) * ( X + 8 )
b) ( x ) 2 + 2x - 63 = 0
∆ = 4 + 252
∆ = 256
X 1 = - 2 + 16 / 2
X 1 = 7
X2 = - 2 - 16 / 2
X2 = - 9
forma fatorada:
( X - 7 ) * ( X + 9)