Réponse :
Explications étape par étape
Bonsoir
E= ( 2x - 1)² - ( 5x + 1 )( 6x - 3 ) + ( 8x² - 2 )
F = ( 3x - 4 )( x - 2 ) - ( 6x - 8 )( x - 3 )
factoriser
E = (2x - 1)^2 - (5x + 1) * 3(2x - 1) + 2(4x^2 - 1)
E = (2x - 1)^2 - 3(5x + 1)(2x - 1) + 2(2x - 1)(2x + 1)
E = (2x - 1)(2x - 1 - 3(5x + 1) + 2(2x + 1))
E = (2x - 1)(2x - 1 - 15x - 3 + 4x + 2)
E = (2x - 1)(-9x - 2)
F = ( 3x - 4 )( x - 2 ) - ( 6x - 8 )( x - 3 )
F = (3x - 4)(x - 2) - 2(3x - 4)(x - 3)
F = (3x - 4)(x - 2 - 2(x - 3))
F = (3x - 4)(x - 2 - 2x + 6)
F = (3x - 4)(-x + 4)