Sol
No
EXERCISE 2.3
Find the remainder when x + 3x² + 3x + 1 is divided by
(1) x + 1
(2) x - 1/2
(3) x
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ANSWER
=
(x−1)
x
3
−3x
2
+3x−1
=
(x−1)
x
3
−3x
2
×1−3x×1
2
−1
3
=
(x−1)
(x−1)
3
=(x−1)
2
=x
2
−2x+1
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