Question

solve x2+3x+2=0 by using completing the square method

Answer 1

x^2 + 2*3/2*x + 9/4 - 9/4 + 2 = 0
(x + 3/2)^2 = 9/4 - 2 => x + 3/2 = sqrt(1/4)

x + 3/2 = |1/2|

x + 3/2 = + 1/2

or

x+ 3/2 = -1/2

Answer 2

- so i think

x*x +x +2x +1*2 =0
x(x+1) +2(x+1) =0
(x+1)(x+2)=0