Respuesta :

choixongdong
4)
a) x^3m x^6 k^15 = x^21 k^15
    x^(3m + 6) = x^21
         3m+6 = 21
         3m = 15
           m = 5
b)
x^5 y^5 z^5 z^m = x^5 y^5 z
             z^m+5 = z^1
              m + 5 = 1
                    m = -4

c)
(x^8 / yz^5)^ m = 1
as you know any number with an exponent of zero is equal to 1

so answer
m = 0 to make the equation becomes true

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