Matematika

Pertanyaan

No. 9
Tolong bantu teman2
No. 9 Tolong bantu teman2

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  • ^4 log (2x²-3x+7) = 2
    ^4 log (2x²-3x+7) = ^4 log 4²
    2x² - 3x + 7 = 4²
    2x² - 3x + 7 - 16 = 0
    2x² - 3x - 9 = 0
    (2x + 3)(x - 3) = 0
    x1 = -3/2  x2 = 3
    4x1.x2 = 4(-3/2)(3) = -18

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