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iVinArrow [24]
3 years ago
8

Please help. pleasee

Mathematics
1 answer:
Paraphin [41]3 years ago
4 0

Answer:

1st option

Step-by-step explanation:

Using the rule of exponents

a^{m} × a^{n} ⇔ a^{(m+n)} ( which can be used on more than 2 numbers )

Given

(- 7)² × (-7)^{5} × (-7)^{-9}

= (-7)^{(2+5-9)}

= (-7)^{-2}

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