(256)0.16 × (16)0.18 is equal to

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Expression
= (256)^0.16 × (16)^0.18
= (2⁸)^0.16 × (2⁴)^0.18
= (2)^{8 × 0.16} × (2)4 × 0.18
= (2)^1.28 × (2)^0.72 = (2)^{1.28 + 0.72}
=(2)² = 4