nilai 8x - xpangkat 2

³√8^(x + 2) = (1/32)^(2 - x)
2^3(x + 2)/3 = 2^-5(2 - x)
x + 2 = -5(2 - x)
x - 5x = -10 - 2
-4x = -12
x = 3

Nilai 8x - x²
8x - x² = 8.3 - 3² = 24 - 9
8x - x² = 15