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Bonjour,
Merci à ceux qui m'aideront


BonjourMerci À Ceux Qui Maideront class=

Répondre :

A
[tex]5x {}^{2} + x = x(5x + 1)[/tex]
B
[tex](8x - 1) {}^{2} - 2x(8x - 1) = (8x - 1)(8x - 1 - 2x) \\ = (8x - 1)(6x - 1)[/tex]
2)C
[tex]x {}^{2} - 24x + 144 =( x - 12) {}^{2} [/tex]
D
[tex]4 + 12y + 9y {}^{2} = (3y + 2) {}^{2} [/tex]
E
[tex]x {}^{2} - 100 = x {}^{2} - 10 {}^{2} = (x - 10)(x + 10)[/tex]
F
[tex](x + 7) {}^{2} - 25 = (x + 7) {}^{2} - 5 {}^{2} = (x + 7 - 5)(x + 7 + 5) \\ = (x + 2)(x + 12)[/tex]



Bonsoir ;

1)

A = 5x² + x = x(5x + 1) .

B = (8x - 1)² - 2x(8x - 1) = (8x - 1)(8x - 1 - 2x) = (8x - 1)(6x - 1) .

2)

C = x² - 24x + 144 = x² - 2 * 12 * x + 12² = (x - 12)² .

D = 4 + 12y + 9y² = (3y)² + 2 * 2 * (3y) + 2² = (3y + 2)² .

E = x² - 100 = x² - 10² = (x - 10)(x + 10) .

F = (x + 7)² - 25 = (x + 7)² - 5² = (x + 7 - 5)(x + 7 + 5) = (x + 2)(x + 12) .