ellajinx
ellajinx
26-01-2018
Mathematics
contestada
Simplify (8a^-7b^3)(-7a^5b^-9)
Respuesta :
lilmissblazebeowopa3
lilmissblazebeowopa3
26-01-2018
first step remove ( )
8a^-7b^3 * -7a^5 b^-9
use exponent rule a^b * a^c =a^b+c
-7 * 8a ^ -2 b^-9 b^3
-7*8a^-2 b^-6
-7*8 *1/a^2b-6
multiply fractions
7*8/a^2b^6
56 / a^2 b^6
so your answer is 56 over a to the power of 2 b to the power of 6
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