Answers

2016-07-20T10:53:03+08:00
U^2-u-6=0 U^2-u=0+6 -transpose the constant term U^2-u=6 1/2(-1) -1/2 (-1/2)^2=1/4 U^2-u+1/4=6+1/4 =25/4 -get the half of the coefficient of x then get the square place it on both sides of the resulting equation. (U-1/2)^2=25/4 -get the square of binomial. /(U-1/2)^2=/25/4 -get the square root on both sides. U-1/2=+-5/2 -positive and negative 5/2 U= +-5/2+1/2 U= 5/2+1/2 | U= -5/2+1/2 U= 6/2 | U= -4/2 U= 3/1 or 1 | U= -2/1 or -2 {U= 1 and -2}
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