FATI2020
Answered

factoriser
[tex]x {}^{4} - 81 - 3(1 - 3x)(x {}^{2} - 9) + 5x(x {}^{2} - 6x + 9 )[/tex]
slt ​

Sagot :

Réponse :

Explications étape par étape

= (x²-9)(x²+9)-3(1-3x)(x-3)(x+3)+5x(x-3)²

= (x-3)(x+3)(x²+9)-3(1-3x)(x-3)+5x(x-3)²

= (x-3)[(x+3)(x²+9)-3(1-3x)+5x(x-3)

= (x-3) (x^3+9x+3x²+27-3+9x+5x²-15x)

= (x-3) (x^3 +8x²-3x+24)