Find the value of k for which the equation 2kx^2-40x+25=0 has equal roots.
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for equal roots
b²=4ac,
then
(-40)²=4×2k×25,
1600=200×k,
then
k=8
b²=4ac,
then
(-40)²=4×2k×25,
1600=200×k,
then
k=8
vibhu3414:
thanx to help me so I can easily get my answer
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