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Evaluate the following expression: $4^7\times4^{-5}$47×4−5.

Easy

Less than a minute

Evaluate the following expression: $8^{-10}\times8^{13}$8−10×813.

Evaluate the following expression: $5^2\times5^{-4}$52×5−4.

Simplify the following, giving your answer with a positive index: $2^3\div2^{-2}$23÷2−2

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