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1 August, 20:52

Which expression can be simplified as 625/n^12 check all that apply

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  1. 1 August, 22:38
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    Only options, A and E give 625/n¹² on simplification. The other options do not apply.

    (5n⁻³) ⁴ = (625/n¹²)

    (25n⁻⁶) ² = (625/n¹²)

    Step-by-step explanation:

    625/n¹²

    a) (5n⁻³) ⁴

    According to the law of indices, this becomes

    (5⁴) (n⁻³) ⁴ = 625 (n⁻¹²) = 625/n¹²

    This applies!

    b) (5n⁻³) ⁻⁴

    According to the law of indices, this becomes

    (5⁻⁴) (n⁻³) ⁻⁴ = (n¹²) / 625 = n¹²/625

    Does Not apply!

    c) (5n⁻⁴) ³

    This becomes

    (5³) (n⁻⁴) ³ = 125n⁻¹² = 125/n¹²

    Does Not apply!

    d) (25n⁻⁶) ⁻²

    This becomes

    (25⁻²) (n⁻⁶) ⁻² = n⁻¹²/625 = 1 / (625n¹²)

    Does Not apply!

    e) (25n⁻⁶) ²

    This becomes

    (25²) (n⁻⁶) ² = 625n⁻¹² = 625/n¹²

    This applies!
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