Math, asked by ManojNag, 1 year ago

(m-2)x^2-(5+m)x+16=0

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Answered by danishk08
23
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

ManojNag: thank you
danishk08: pls follow ne...if you want
danishk08: thanks
ManojNag: next one
danishk08: ??
ManojNag: 3x^2-6x+k=0
danishk08: it also have equal roots?
ManojNag: but k is there
danishk08: here also.... b^2-4ac=0..........6^2-4×3k=0.......36-12k=0.....12k=36.....k=3
ManojNag: thank u
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