Matematika

Pertanyaan

Tolooong bantu yaa
2^x+5=√8^x

125^x+7=25^3x-4
Pliss tlonggg yaa
Tolooong bantu yaa 2^x+5=√8^x 125^x+7=25^3x-4 Pliss tlonggg yaa

1 Jawaban


  • 2^(x + 5) = √(8^x)
    2^(x + 5) = 2^(3x/2)
    x + 5 = 3/2 x
    5 = 3/2 x - x
    5 = 1/2 x
    x = 5 × 2
    x = 10 ✔

    ••
    125^(x + 7) = 25^(3x - 4)
    5^3(x + 7) = 5^2(3x - 4)
    3x + 21 = 6x - 8
    21 + 8 = 6x - 3x
    x = 29/3 ✔