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Question
Simplify, giving Solution with positive index
(- a5) (a2)
Sum
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Solution
(- a5) (a2)
= (-1 × a)5 × a2
= (-1)5 × a5+2
= - 1 × a7 = - a7
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Laws of Exponents (Through Observing Patterns to Arrive at Generalisation.)
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