25. Find such value of p for quadratic equation pr - 3x + 5 = 0 that has two equal roots
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b²-4ac=0 (if the roots of a quadratic equation are real and equa)
here,
px²-3x+5=0
hence
9-4×p×5=0
=> 9-20p=0
=>9=20p
therefore p=9/20
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