Respuesta :

Answer:

x^158

Step-by-step explanation:

x^12^5 is x^60

x^-2^9 is x^-18

x^60*x^-18 = x^60-18=x^42

x^40^5 is x^200

x^42 *x^y=x^200

200-42 is 158

y=158.

The blank is x^158.

Hope this helps plz hit the crown :D

Answer:

[tex]x^{158}[/tex]  yes  to the 158  :/  I don't know any thing that would need that big of a number :|

Step-by-step explanation:

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