Penjelasan dengan langkah-langkah:
Untuk nomor 9, 1/32 = 2^-5
Spesifikasi : Eksponen
Kelas : 9
8)
3^2 × 5^-2 + 4^2 × 5^-2
= 5^-2 (3^2 + 4^2)
= 5^-2 (9 + 16)
= 5^-2 (25)
= 5^-2 (5^2)
= 5^(-2+2)
= 5^0 (B)
9)
8^-2 + (1/4)^3
= (2^3)^-2 + 4^-3
= 2^(3×(-2)) + (2^2)^-3
= 2^-6 + 2^(2×(-3))
= 2^-6 + 2^-6
= 2 × 2^-6
= 2^(1+(-6))
= 2^(1-6)
= 2^-5 (C)
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Penjelasan dengan langkah-langkah:
Untuk nomor 9, 1/32 = 2^-5
Spesifikasi : Eksponen
Kelas : 9
8)
3^2 × 5^-2 + 4^2 × 5^-2
= 5^-2 (3^2 + 4^2)
= 5^-2 (9 + 16)
= 5^-2 (25)
= 5^-2 (5^2)
= 5^(-2+2)
= 5^0 (B)
9)
8^-2 + (1/4)^3
= (2^3)^-2 + 4^-3
= 2^(3×(-2)) + (2^2)^-3
= 2^-6 + 2^(2×(-3))
= 2^-6 + 2^-6
= 2 × 2^-6
= 2^(1+(-6))
= 2^(1-6)
= 2^-5 (C)