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Mathematics

Evaluate :

70×(25)32537^0 \times (25)^{-\dfrac{3}{2}} - 5^{-3}

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Answer

Simplifying the expression :

70×(25)3253=1×(52)3253=1×5353=5353=0.\Rightarrow 7^0 \times (25)^{-\dfrac{3}{2}} - 5^{-3} = 1 \times (5^2)^{-\dfrac{3}{2}} - 5^{-3} \\[1em] = 1 \times 5^{-3} - 5^{-3} \\[1em] = 5^{-3} - 5^{-3} \\[1em] = 0.

Hence, 70×(25)3253=0.7^0 \times (25)^{-\dfrac{3}{2}} - 5^{-3} = 0.

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