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Sagot :
Answer: I tried to solve it but my device is completely broken!
Step-by-step explanation: To find the value of the expression when
x
=
−
3
substitute
−
3
for each occurrence of
x
in the expression and then calculate the result:
x
2
−
1
x
+
1
becomes:
(
−
3
)
2
−
1
−
3
+
1
⇒
9
−
1
−
2
⇒
8
−
2
⇒
−
4
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