(m-2)x^2-(5+m)x+16=0
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it has equal roots means that
b^2-4ac=0
(5+m)^2-64(m-2)=0
25+m^2+10m-64m+128=0
m^2-54m+153=0
m^2-51m-3m+153=0
m(m-51)-3(m-51)=0
(m-3)(m-51)=0
m=3 or 51
b^2-4ac=0
(5+m)^2-64(m-2)=0
25+m^2+10m-64m+128=0
m^2-54m+153=0
m^2-51m-3m+153=0
m(m-51)-3(m-51)=0
(m-3)(m-51)=0
m=3 or 51
ManojNag:
thank you
pls follow ne...if you want
thanks
next one
??
3x^2-6x+k=0
it also have equal roots?
but k is there
here also.... b^2-4ac=0..........6^2-4×3k=0.......36-12k=0.....12k=36.....k=3
thank u
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