Grade 11Algebra
if 3x2-2(a-d)x2+(a2+2(b2+c2)+d2)=2(ab+bc+cd)then prove a,b,c and d are in AP
if 3x2-2(a-d)x2+(a2+2(b2+c2)+d2)=2(ab+bc+cd)
then prove a,b,c and d are in AP
1 Answer
Saurabh Koranglekar
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