what should be added in a²+b² to get -3b²
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Answer:
suppose , the number is X...
then, according to the question.....
X + a²+b² = -3b²
X = -3b² - a² - b²
X = -4b² - a²
= -a² - 4b²
or .... -(a² + 4b²) ans.
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Hope it will be helpful. ..
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