Pls can anyone help me in solving this
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hope you understand
feel free to ask!
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Step-by-step explanation:
-3^n× 9^n+1/3^n-1×9^n-1
= - 3^(n-n+1) × 9^(n+1-n+1)
= -3 × 9^2
= -3 ×9×9
= -243
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