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Question
Square of `(-2/3)` is ______.
Options
`(-2)/3`
`2/3`
`(-4)/9`
`4/9`
Solution
Square of `(-2/3)` is `bb(underline(4/9))`.
Explanation:
Square of `(-2)/3` is `((-2)/3)^2`
So, `((-2)/3)^2 = ((-2)/3) xx ((-2)/3) = 4/9` ......[∵ Multiplication of two rational numbers with same sign is always positive]
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