X^2/2 - 4x + 6 = 0 (2)x^2 - 8x + 12 = 0a= 1; b = - 8; c = 12∆ = b^2-4ac∆ = (-8)^2 - 4.1.12∆ = 64-48∆ = 16x = [ - b +/- √∆]/2ax = [ -(-8) +/- √16]/2.1x = [ 8 +/- 4]/2x' = [8+4]/2 = 12/2 = 6x" = [8 - 4]/2 = 4/2 = 2
R.: (2 ; 6)
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X^2/2 - 4x + 6 = 0 (2)
x^2 - 8x + 12 = 0
a= 1; b = - 8; c = 12
∆ = b^2-4ac
∆ = (-8)^2 - 4.1.12
∆ = 64-48
∆ = 16
x = [ - b +/- √∆]/2a
x = [ -(-8) +/- √16]/2.1
x = [ 8 +/- 4]/2
x' = [8+4]/2 = 12/2 = 6
x" = [8 - 4]/2 = 4/2 = 2
R.: (2 ; 6)