Find the remainder when 2 x cube + 3 x square - 5 x + 7 is divided by 2 x minus 1
Answers
Answered by
11
2x-1=0
x=1/2
P(1/2)=2×[1/2]cube +3×[1/2]square -5×1/2 +7
P(1/2)=2/8 +3/4 -5/2 +7
=1/4 +3/4 -5/2+7
=4/4 -5/2+7
=-5/2+7
=-5+14/2
=9/2 Answer
Answered by
14
first ,2x-1=0
2x=1
x=1/2=0.5
p(1/2)=2(1/2)cube+3(1/2)square-5(1/2)+7
=2(1/8)+3(1/4)-5(1/2)+7
= 2/8+3/4-5/2+7
= 1/4+3/4-10/4+28/4
= 1+3-10+28/4
=32-10/4
=22/4
=11/2
=5.5
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