find the value of m if 9^2m*9^-5=9^13
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4
Step-by-step explanation:
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Answered by
4
Answer: m=4
Step-by-step explanation: (9)^2m÷9^-5=9^13
⇒ (9)^(2m-(-5))=9^13
⇒ (9)^2m+5=9^13
On Comprising their powers,
⇒2m+5=13
⇒2m=13-5
⇒2m=8
⇒m=8÷2
∴m=4
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