Question

if the equation ax²+2x+c=0 has two equal root then find c

Answer 1

Answer:

if the equation have

two equal roots then

let the root is P

then

2P=-2/a

P=-1/a

and

P^2 =c/a

put the value of P is the equation

then

1/a^2=c/a

then c=1/a

ok

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