Bonjour,
a) 2c + 5a – c = 2 * (- 3) + 5 * (- 1) – (- 3) = - 6 – 5 + 3 = - 11 + 3 = - 8
b) 3ab + c = 3 * (- 1) * 2 + (- 3) = - 3 * 2 – 3 = - 6 – 3 = - 9
c) – (-a) + b – c = - (- - 1) + 2 – (- 3) = - 1 + 2 + 3 = - 1 + 5 = 4
d) A² + b² + c² = (- 1)² + 2² + (- 3)² = 1 + 4 + 9 = 14
e) Abc = (- 1) * 2 * (- 3) = - 2 * (- 3) = 6
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Bonjour,
a) 2c + 5a – c = 2 * (- 3) + 5 * (- 1) – (- 3) = - 6 – 5 + 3 = - 11 + 3 = - 8
b) 3ab + c = 3 * (- 1) * 2 + (- 3) = - 3 * 2 – 3 = - 6 – 3 = - 9
c) – (-a) + b – c = - (- - 1) + 2 – (- 3) = - 1 + 2 + 3 = - 1 + 5 = 4
d) A² + b² + c² = (- 1)² + 2² + (- 3)² = 1 + 4 + 9 = 14
e) Abc = (- 1) * 2 * (- 3) = - 2 * (- 3) = 6