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Sagot :

UPAU

Réponse:

a)

[tex]2 \times 3^{2} - 4 \times 3 - 8 \\ 2 \times 9 - 4 \times 3 - 8 \\ 18 - 12 - 8 \\ 6 - 8 \\ - 2[/tex]

b)

[tex]2 \times ( - 5)^{2} - 4 \times ( - 5) - 8 \\ 2 \times 25 - 4 \times ( - 5) - 8 \\ 50 - ( - 20) - 8 \\ 50 + 20 - 8 \\ 70 - 8 \\ 62 [/tex]

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