tolong jawab.............
Materi : Bentuk Akar dan Pangkat
( x = -4 atau y = 5 )
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x-² = (-4)-² = (-¼)² = 1/16
3y-²x³ = 3(5)-²(-4)³ = 3(1/25)(-64) = -192/64
x-¹ + y-² = (-4)-¹ + 5-² = -¼ + 1/25 = -21/100
x-² - y-² = (-4)-² - 5-² = 1/16 - 1/25 = 9/350
Semoga bisa membantu
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