Grade 12th pass9 grade maths
3. Check whether 7 + 3x U1 a factor of + 71
3. Check whether 7 + 3x U1 a factor of + 71
1 Answer
Pawan Prajapati
If 7 + 3% is a fact.or of 3x3 + 7x, then p(-i) = 0
( 7) (-7)3
.. p -3 = 3 x 3 + 7 x
(-37)
-343 49 -343 49
= 3 x 27 - 3 = 9- - 3
-343-147 -490
= 9 = 9- • 0•
As remainder is not zero, hence (7 + 3%) is not a factor of 3.%3 + 7x.
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