what constant number must be added or subtracted to 4x2+12x+8=0 to slove it by method of completing the square
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4x^2+12x+8=0
x^2+3x+2=0
x^2+2(3/2)x+(3/2)^2-(3/2)^2+2=0
x^2+2(3/2)x+9/4=9/4-2
(x+3/2)^2=1/4
x+3/2=±1/2
→x=-2, -1
Hope it is easy to get
x^2+3x+2=0
x^2+2(3/2)x+(3/2)^2-(3/2)^2+2=0
x^2+2(3/2)x+9/4=9/4-2
(x+3/2)^2=1/4
x+3/2=±1/2
→x=-2, -1
Hope it is easy to get
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