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Bonjour,43)
a) 7 * x + 7 * 2
= 7 (x + 2)
b) 6 * y - 6 * 3
= 6 (y - 3)
c) z * z - 6 * z
= z (z - 6)
d) c * c - 1 * c
= c (c - 1)
44)
a) 6x - 12
= 6 (x - 2)
b) 7y + 21
= 7 (y + 3)
c) z² - 5z
= z (z - 5)
d) 9a - 18
= 9 (a - 2)
e) - 3b + 6
= 3 (- b + 2)
f) 2c² - 3c
= c (2c - 3)
45)
a) 5x + 5
= 5 (x + 1)
b) 7y - 7
= 7 (y - 1)
c) z² + z
= z (z + 1)
d) - 3a + 3
= 3 (- a + 1)
e) c² - c
= c (c - 1)
f) 3a² + 3a
= 3a (a + 1)