please give answer in maths
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Step-by-step explanation:
3¹³× 3^7 - 3^9×3³
= 3^(13+7) - 3^(9+3)
= 3^20 - 3^ 12
= 3^8
Hope it helped you
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Answered by
1
Step-by-step explanation:
3¹³×3^7-3^9×3³
=(3¹³×3^7)-(3^9×3). [ a^m.aⁿ=a^m+n]
=(3^13+7)-(3^9+3)
=(3^20)-(3¹²)
=(3^10)²-(3^6)². [(a^m)ⁿ=a^mn]
=(3^10+3^6)(3^10-3^6)
(or)
(3^20)-(3¹²)
=(3¹²x 3^8)-(3¹²)
=3¹²(3^8-1)
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