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Answer:
3a²+4b²
Step-by-step explanation:
Given in the image
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GIVEN: A= a²-b²+2ab
B= a²+4b²-6ab
C= a²+4ab+b²
TO FIND: A+B+C= ?
A+B+C= a²-b²+2ab+a²+4b²-6ab+a²+4ab+b²
= 3a²+0-4ab+4b²+4ab
= 3a²+0+0+4b²
= 3a²+4b²
THEREFORE, A+B+C= 3a²+4b²
Hope you have understood!! (•‿•)
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