(x+8)^3 = 64 (x+3)^3 = 8 (x-4)^3 = 125

2 bình luận về “(x+8)^3 = 64 (x+3)^3 = 8 (x-4)^3 = 125”

1. a) ( x + 8)³ = 64

   (x + 8)³ = 64

   ⇔ x + 8 = 4

   ⇔ x = -4

   b) (x + 3)³ = 8

   ⇔ (x + 3)³ = 8

   ⇔ x + 3 = 2

   ⇔ x = -1

   c) ( x – 4)³ = 125

   ⇔ (x-4)³ = 125

   ⇔ x – 4 = 5

   ⇔ x=9

   5 sao nha

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2. #wdr

   (x+8)^3 =64

   (x+8)^3 = 4^3

   x+8=4

   x = 4-8

   x = -4

   —-

   (x+3)^3 =8

   (x+3)^3 =2^3

   x+3=2

   x =2-3

   x=-1

   —-

   (x-4)^3 =125

   (x-4)^3 =5^3

   x-4=5

   x =5+4

   x=9

    

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