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Q.


Subtracting 5 a 2 −7ab+5 b 2 from 3ab−2 a 2 −2 b 2 gives ____.

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Detailed Solution

Subtracting 5 a 2 −7ab+5 b 2 from 3ab−2 a 2 −2 b 2 gives 10ab−7 a 2 −7 b 2 .
Given data is to subtract 5 a 2 −7ab+5 b 2 from 3ab−2 a 2 −2 b 2 .
Subtracting like terms,
⇒3ab−2 a 2 −2 b 2 − 5 a 2 −7ab+5 b 2 =3ab−2 a 2 −2 b 2 −5 a 2 +7ab−5 b 2 =3ab+7ab−2 a 2 −5 a 2 −2 b 2 −5 b 2 =10ab−7 a 2 −7 b 2
Hence, the answer is 10ab−7 a 2 −7 b 2 .
 
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