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(X - 13)(X + 3) = 0
X1 = 13; X2 = -3
2) X² + 7X = 0
X(X + 7) = 0
X1 = 0; X2 = -7
3) 3X² + 27X + 30 = 0 (No se puede resolver por factorizacion)
4) X² - 10X - 24 = 0
(X - 12)(X + 2) = 0
X1 = 12; X2 = -2
5) 2X² + 19X + 12 = 0 (No se puede resolver por factorizacion)
6) X² - 9X - 36 = 0
(X - 12)(X + 3) = 0
X1 = 12; X2 = -3
7) 4X² + 12X - 40 = 0 (Simplifico entre 4)
X² + 3X - 10 = 0
(X + 5)(X - 2) = 0
X1 = -5; X2 = 2
8) X² - 8X = 0
X(X - 8) = 0
X1 = 0; X2 = 8
9) X² + 5X - 4 = 0 (No se puede resolver por factorizacion)
10) X² - 17X = -30
X² - 17X + 30 = 0
(X - 15)(X - 2) = 0
X1 = 15; X2 = 2