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Factor higher degree polynomials

(x^2 - 4) (x^2 + 6x + 9)

Sagot :

[tex]~~~(x^2 -4)(x^2 +6x +9)\\\\=(x^2 -2^2)(x^2 +2 \cdot 3x +3^2)\\\\=(x+2)(x-2)(x+3)^2[/tex]