if A=4x²+y²-6xy,B=3y²+12X²+8xy2a+B=
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To find 2a+b
=2(4x2+y2-6xy)+3y2+12x2+8xy
=8x2+2y2-12xy+3y2+12x2+8xy
=20x2+5y2-4xy
Hope this helps u
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=2(4x2+y2-6xy)+3y2+12x2+8xy
=8x2+2y2-12xy+3y2+12x2+8xy
=20x2+5y2-4xy
Hope this helps u
All the best
Please mark me as brainliest
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