tolong donk no.14 aja makasih

Bab Eksponensial
Matematika SMP Kelas IX

^ = pangkat

4^(x² - 4x - 1) = 8^(x + 4)
(2²)^(x² - 4x - 1) = (2^3)^(x + 4)
2 (x² - 4x - 1) = 3 (x + 4)
2x² - 8x - 2 = 3x + 12
2x² - 8x - 2 - 3x - 12 = 0
2x² - 11x - 14 = 0
a = 2; b = -11; c = -14

2(p + z) + (p . z)
= 2 (-b/a) + (c/a)
= 2 (-(-11)/2) + (-14/2)
= 11 - 7
= 4

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