Réponse :
Explications étape par étape
Bonjour
(... - 2)^2 = 16x^2 - ... + ...
(4x - 2)^2 = 16x^2 - 16x + 4
64 + 48x + ... = (... + ...)^2
64 + 48x + 9x^2 = (8 + 3x)^2
121 - 4x^2 = (12 - 2x)(11 + 2x)
x^8 + ... + ... = (... + 0,5)^2
x^8 + x^4 + 0,25 = (x^4 + 0,5)^2
x^2 - 16 = (x - 4)(x + 4)
64x^10 - y^8 = (8x^5)^2 - (y^4)^2
= (8x^5 - y^4)(8x^5 + y^4)
... - 9 = (2y + ...)(... - ...)
4y^2 - 9 = (2y + 3)(2y - 3)
x^2 + 5x + .. = (... + ...)^2
x^2 + 5x + 25/4 = (x + 5/2)^2
x^2 + 8x + ... = (... + ...)^2
x^2 + 8x + 16 = (x + 4)^2
9x^2 + ... + ... = (... + 4y)^2
9x^2 + 24xy + 16y^2 = (3x + 4y)^2
4x^2 + 4x + 1 = (2x + 1)^2
81x^2 - 18x = 9x(9x - 2)
