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(3x-5)²-25 = 0
(3x-5)²-5² = 0
(3x-5+5)(3x-5-5) = 0
3x ( 3x-10) = 0 pour x= 0 ou x = 10/3
9x²-4+(3x+2)(6x+8) = 0
(3x-2)(3x+2) + (3x+2)(6x+8) = 0
(3x+2)(3x-2+6x+8) = 0
(3x+2)(9x+6) = 0 pour x = -2/3 ou x = -6/9 = -1/3
(4x-6)²- (2x+1)² = 0
(4x-6 -2x-1)(4x-6+2x+1) = 0
(2x-7)(6x-5) = 0 pour x = 7/2 ou x = 5/6
(x-2)(3x+5) + (-x+2)(6x-7) = 0
(x-2)(3x+5) + (x-2)( -6x+7) = 0
(x-2)(3x+5-6x+7) = 0
(x-2)(-3x+12) = 0 pour x = -2 ou x = -12/-3 = 4
7x² -2V21x+3 = 0
(V7 x - V3)² = 0 pour x = V3 / V7 = V(3/7)
(6x-5)(2x-3) - (6x-5) = 0
(6x-5)(2x-3-1) = 0
(6x-5)(2x-4) = 0 pour x = 5/6 ou x = 4/2 = 2
(3x-5)²-25 = 0
(3x-5)²-5² = 0
(3x-5+5)(3x-5-5) = 0
3x ( 3x-10) = 0 pour x= 0 ou x = 10/3
9x²-4+(3x+2)(6x+8) = 0
(3x-2)(3x+2) + (3x+2)(6x+8) = 0
(3x+2)(3x-2+6x+8) = 0
(3x+2)(9x+6) = 0 pour x = -2/3 ou x = -6/9 = -1/3
(4x-6)²- (2x+1)² = 0
(4x-6 -2x-1)(4x-6+2x+1) = 0
(2x-7)(6x-5) = 0 pour x = 7/2 ou x = 5/6
(x-2)(3x+5) + (-x+2)(6x-7) = 0
(x-2)(3x+5) + (x-2)( -6x+7) = 0
(x-2)(3x+5-6x+7) = 0
(x-2)(-3x+12) = 0 pour x = -2 ou x = -12/-3 = 4
7x² -2V21x+3 = 0
(V7 x - V3)² = 0 pour x = V3 / V7 = V(3/7)
(6x-5)(2x-3) - (6x-5) = 0
(6x-5)(2x-3-1) = 0
(6x-5)(2x-4) = 0 pour x = 5/6 ou x = 4/2 = 2