find the value of 'p'for which the A.E 2y2-py+1=0 have equal roots
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for equal roots d=b^2-4ac=0
therefore, p^2-4×2×1=0
p^2=8
P=+-2√2
therefore, p^2-4×2×1=0
p^2=8
P=+-2√2
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