Roboguru

Pertanyaan

Jika diketahui blank squared log space a space plus space squared log space b space equals space 12 space d a n space 3 squared l og space a space minus space 3 squared l o g space b space equals space 4, maka a + b adalah ....

  1. 144

  2. 272

  3. 528

  4. 1024

  5. 1040

R. RGFLSATU

Master Teacher

Jawaban terverifikasi

Pembahasan

rightwards arrow squared log space a space plus space squared log space b space equals space 12 space  squared log space a space plus space squared log space b space equals space squared log 12 space  L o g space a plus space L o g space b space equals L o g space a b  squared L o g a space x space b space equals to the power of 2 space end exponent L o g 12  a b equals space 2 to the power of 12  b equals 2 to the power of 12 over a...........1 right parenthesis    rightwards arrow 3 squared l og space a space minus space 3 squared l o g space b space equals space 4  a space L o g space b space equals L o g space a to the power of b  L o g space a space minus space L o g space b space equals space L o g space a over b  3 squared space L o g space a space minus to the power of space 2 end exponent space L o g space b space equals space 4  squared space L o g space a cubed space minus space squared space L o g space b space equals squared space L o g space 2 to the power of 4  squared log a cubed over b equals squared space L o g space 2 to the power of 4  a cubed over b equals 2 to the power of 4...........2 right parenthesis    P e r s a m a a n space 1 space d i s u b s t i t u s i space k e space p e r s a m a a n space 2  a cubed over b equals 2 to the power of 4  fraction numerator a to the power of 13 over denominator begin display style 2 to the power of 12 over a end style end fraction equals 2 to the power of 4  a cubed equals open parentheses 2 to the power of 4 close parentheses open parentheses 2 to the power of 16 over a close parentheses  a to the power of 4 equals 2 to the power of 16  a equals 2 to the power of 4  m a k a space b equals 2 to the power of 12 over a equals 2 to the power of 12 over 2 to the power of 4 equals 2 to the power of 8  a space plus space b space equals space 16 space plus space 256 space equals space 272

87

5.0 (1 rating)

Pertanyaan serupa

Diketahui persamaan  dan 27x+4y=7291​. Tentukan nilai x dan y dari persamaan tersebut.

9

0.0

Jawaban terverifikasi

RUANGGURU HQ

Jl. Dr. Saharjo No.161, Manggarai Selatan, Tebet, Kota Jakarta Selatan, Daerah Khusus Ibukota Jakarta 12860

Coba GRATIS Aplikasi Ruangguru

Produk Ruangguru

Produk Lainnya

Hubungi Kami

Ruangguru WhatsApp

081578200000

Email info@ruangguru.com

info@ruangguru.com

Contact 02140008000

02140008000

Ikuti Kami

©2022 Ruangguru. All Rights Reserved PT. Ruang Raya Indonesia