Answers

2014-09-19T20:34:15+05:30
Let p(x)=px²+5x+r.Since x-2 ad x-1/2 are factors of p(x).
p(2)=0 and p(1/2)=0
p×2²+5×2+r=0  and  p(1/2)²+5×1/2+r=0

4p+10+r=0 and p/4+5/2+r=0

4p+r=-10 and p+4r+10=0
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4p+r=-10 and p+4r+10=0
4p+r=-10 and p+4r=-10
4p+r=p+4r
3p=3r   ⇒ p=r
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