Answer:
(x-3)²
Step-by-step explanation:
-3-3 = -6
-3*-3 = 9
entonces la factorización es:
(x-3)² = (x-3)(x-3) = x*x + x*-3 + x*-3 -3*-3 = x² - 3x -3x +9
= x² - 6x + 9
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