a² + b² - 7ab, 3b² Subtract the given expressions.
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Given two expressions are
a² + b² - 7ab , 3b²
i ) Subtracting first expression
from second expression,we get
3b² - ( a² + b² - 7ab )
= 3b² - a² - b² + 7ab
= 2b² - a² + 7ab
ii ) subtract second expression
from first expression , we get
a² + b² - 7ab - 3b²
= a² - 2b² - 7ab
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