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bonjour

H  = 49 x² - 36

h ( 7 x - 6 ) ( 7 x + 6 )

J = ( x + 1 )² - 25

j = ( x + 1 - 5 ) ( x + 1 + 5 )

J = ( x - 4 ) ( x + 6 )

K = ( 3 x - 1 ) ( x + 2 + 5 x - 4 )

K = ( 3 x - 1 ) ( 6 x - 2 )

K =  2 ( 3 x - 1 )  ( 3 x - 1 )

LOULAKAR

Réponse :

a² - b² = (a - b)(a + b)

Explications étape par étape

Bonjour,

Factoriser :

H=49x²-36

H = (7x)² - 6²

H = (7x - 6)(7x + 6)

J=(X+1)²-25

J = (x + 1)² - 5²

J = (x + 1 - 5)(x + 1 + 5)

J = (x - 4)(x + 6)

K=(x+2)(3x-1)+(5x-4)(3x-1)

K = (3x - 1)(x + 2 + 5x - 4)

K = (3x - 1)(6x - 2)

K = (3x - 1) * 2(3x - 1)

K = 2(3x - 1)²

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