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If x is a positive real number and x^2=2...

If `x` is a positive real number and `x^2=2,` then `x^3=` `sqrt(2)` (b) `2sqrt(2)` (c) `3sqrt(2)` (d) 4

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`x^2=2`
`x =sqrt2`
`x^3=(2)^(1/2×3)`
`therefore x^3=2sqrt2`
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