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tekilochka [14]
3 years ago
11

Answer, please. I need help.

Mathematics
2 answers:
abruzzese [7]3 years ago
8 0

Answer:

1/ b^4

Step-by-step explanation:

because -7 +3 = -4 but it can only be positive. So you but the -4 to the bottom to become b^4

ExtremeBDS [4]3 years ago
4 0

Answer:

Step-by-step explanation:

\text{rule }(x^a)(x^b)=x^{(a+b)}\\ \\ (b^{-7})(b^3)=b^{(-7+3)}\\ \\ b^{-4}=\frac{1}{b^4}

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