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Jawab:
Penjelasan dengan langkah-langkah:
aᵇ = 2²⁰ - 2¹⁹
aᵇ = 2¹⁹ . (2 - 1)
aᵇ = 2¹⁹
*******************************************************
a = 2 dan b = 19
*******************************************************
a + b
= 2 + 19
= 21
no. 48
Keterangan :
^ = dibaca pangkat yaa
a^b = 2^20 - 2^19
= 2^1+9 - 2^19
= 2^1 × 2^19 - 2^19
= 2 × 2^19 - 1 × 2^19
= 2^19 ( 2 - 9 )
= 2^19 × 1
= 2^19
Berdasarkan uraian diatas a = 2
Dan, b = 19
Sehingga: a + b
= 2 + 19
= 21 ( D )
Jadi, jawabannya 21 yang ( D ) .
Semoga membantu:) ^_^