Tentukan hasil pemangkatan berikut! a. -17² b. 2(-11)³ c. (-8 12)⁴ d. (3a)⅝ e. 4(-5x)⁴
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SOAL A.
-17² = -(17 × 17) = -289
SOAL B.
2•(-11)³ = 2•((-11) × (-11) × (-11)) = 2•(-1.331) = -2.662
SOAL C.
((-8) + 12)⁴ = (4)⁴ = 4 × 4 × 4 × 4 = 256
SOAL D.
[tex] {(3a)}^{\frac{5}{8} } = \sqrt[8]{ {(3a)}^{5} } = \sqrt[8]{243 {a}^{5} } [/tex]
SOAL E.
4•(-5x)⁴ = 4•(-5x)•(-5x)•(-5x)•(-5x) = 4•625x⁴ = 2.500x⁴
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