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Sagot :

HAMMOUDIBATOUL

Réponse:

a)A=4×1²-3×1-5

=4-3-5

=1-5

=-4

b)A=4×(-1)²-3×(-1)-5

=4+3-5

=9-5

=4

c) A=4×9-3×3-5

=36-9-5

=36-14

=22

d) A=4×(-2)²-3×(-2)-5

=4×4+6-5

=16+1

=17

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