Mathematics · Indices and Surds

If (0.064) × (0.4)7 = (0.4)x × (0.0256)2, then the value of x-1 - 1x - 1 is:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1-13
2-3
32
4-12✓

Correct answer

-12

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If (0.064) × (0.4)7 = (0.4)x × (0.0256)2, then the value of x-1 - 1x - 1 is:

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If (0.064) × (0.4)7 = (0.4)x × (0.0256)2, then the value of x-1 - 1x - 1 is:

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