M/nx2+n/m=1-2x solve this by factorisation method
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(m/n)x^2 +(n/m) = 1-2x
(m/n)x^2 +2x =1-(n/m)
x^2 +2(n/m)x =n/m -n^2/m^2
add (n/m)^2 both side
x^2 +2.(n/m).x +(n/m)^2 =n/m -n^2/m^2+n^2/m^2
(x+n/m)^2 =n/m
take square root ,
x + n/m = +_ √(n/m)
x = -n/m +_√(n/m)
(m/n)x^2 +2x =1-(n/m)
x^2 +2(n/m)x =n/m -n^2/m^2
add (n/m)^2 both side
x^2 +2.(n/m).x +(n/m)^2 =n/m -n^2/m^2+n^2/m^2
(x+n/m)^2 =n/m
take square root ,
x + n/m = +_ √(n/m)
x = -n/m +_√(n/m)
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