If 16x2-40xy+(m+3)y2 is a perfect square then find m
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If 16x2-40xy+(m+3)y2 is a perfect square then find m
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Answer:
let,x=y=1
32-40+(m+3)2
32-40+2m+6
38-40+2m
-2+2m
2m=2
m=1 ans.