Try Out Matematika IPA 2019 no 1

Try Out Matematika IPA 2019
Soal dan Pembahasan Try Out Matematika IPA 2019
Jawaban Try Out Matematika IPA 2019

1. Nilai paling sederhana dari ( 64 ^2/3 + 81 ^1/2) / (125 ^2/3 - 32 ^2/5) adalah ...

A. -25/21
B. -7/21
C. 7/21
D. 17/21
E. 25/21




Jawaban : E

64 ^2/3 = 2^{6 . 2/3} = 2⁴ = 16
81 ^1/2 = 9^{2 . 1/2} = 9
125 ^2/3 = 5^{3 . 2/3} = 5² = 25
32 ^2/5 = 2^{5 . 2/5} = 2² = 4

( 64 ^2/3 + 81 ^1/2) / (125 ^2/3 - 32 ^2/5)
= (16 + 9) / (25 - 4)
= 25/21

>>Nomor 2