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Sagot :
Answer:
- 1
Step-by-step explanation:
Substitute a = - 1 into the expression, that is
(- 1)³ - 2(- 1)² + 3(- 1) + 5
= - 1 - 2(1) - 3 + 5
= - 1 - 2 - 3 + 5
= - 6 + 5
= - 1
Answer:
=(-1)³-2(-1)²+3(-1)+5
=-1-2(1)+3(-1)+5
=-1-2+3+5
=-3+8
=5
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