bjr
2⁵ = 2 x 2 x 2 x 2 x 2 = 32
(-3)³ = -3 x (-3) x (-3) = - 27
-7⁻² = - 1 / 7² = -1/49
(2/5)³ = 2/5 x 2/5 x 2/5 = 8/125
(4/3)⁻¹ = 3/4
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bjr
2⁵ = 2 x 2 x 2 x 2 x 2 = 32
(-3)³ = -3 x (-3) x (-3) = - 27
-7⁻² = - 1 / 7² = -1/49
(2/5)³ = 2/5 x 2/5 x 2/5 = 8/125
(4/3)⁻¹ = 3/4