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Question

Mark the correct alternative in the following question:

If x2-4=x3-1, then x=a 3 b 6 c 18 d 2

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Solution

As, x2-4=x3-1x2-x3=4-1 By transposing x3 to LHS and -4 to RHS3x6-2x6=33x-2x6=3x6=3x=3×6 By transposing 6 to RHS x=18

Hence, the correct alternative is option (c).

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