Haylen Haylen
  • 12-02-2019
  • Mathematics
contestada

i need helpppppppp i don’t understand this question

i need helpppppppp i dont understand this question class=

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 12-02-2019

Answer:

c. 1/128

Step-by-step explanation:

(2 ^ -5)^2

----------------------

2^ -3

Lets first simplify the numerator.

a^b^c = a^(b*c)

(2 ^ -5)^2 = 2^(-5*2) = 2^-10

(2 ^ -10)

----------------------

2^ -3

When dividing, since the bases are the same, we keep the bases and subtract the exponents.

a^b/ a^c = a^(b-c)

2^(-10- -3)

2^(-10+3)

2^(-7)

We know the negative exponent moves it from the numerator to the denominator

1/2^7

1/128

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