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Question
Subtract the following expressions:
–7p2qr from –3p2qr
Solution
We have, –3p2qr – (–7p2qr) = –3p2qr + 7p2qr
= p2qr(–3 + 7) ......[∵ With –ve sign, +ve sign will be change]
= 4p2qr
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