What should be substracted from -5/3 to get -2/7? 29/21 -21/29 -29/21 21/29
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Answered by
8
Answer:
Let the number which should be subtracted from the polynomial 2x
3
−5x
2
+5x be a.
Let us say,
p(x)=2x
3
−5x
2
+5x−a
By using the factor theorem,
2x−3=0
⇒x=
2
3
p(
2
3
)
2(
2
3
)
3
−5(
2
3
)
2
+5(
2
3
)−a
4
27
−
4
45
+
2
15
−a
a
=0
=0
=0
=
2
15
−
2
9
=3
Hence, 3 should be subtracted from 2x
3
−5x
2
Answered by
0
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