1+7(2x+7y)+12(2x+7y)^2
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=1+14x+49y+(24x+84y)^2
=1+14x+49y+576x^2+4032xy+7056y^2
=576x^2+7056y^2+4032xy+14x+49y+1
if u like my answer then mark as a brainliest...
=1+14x+49y+576x^2+4032xy+7056y^2
=576x^2+7056y^2+4032xy+14x+49y+1
if u like my answer then mark as a brainliest...
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