Solve for x2-x-a(a+1)=0

x²-x-a(a+1)= 0....... x²+ax-(a+1)x-a(a+1) =0........ x(x+a) -(a+1)( x+a)=0...... (x- (a+ 1))(x +a)=0...... Therefore x=a+1 or -a
  • -8
This is an easy method

  • 15
2x-x-a(a+1)=0
x-a(a+1)=0
-a(a+1)=-x
-a2-a=-x
a2+a=x
  • -1
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