Answers

2014-12-06T18:28:54+05:30


given,

x+x=20

2x=20

x=10............................(1)

 x²+x²..........................(2)

substitute (1) in (2)

10²+10²=200

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2014-12-06T18:36:20+05:30
x+1x=20 ⇒x=20/2=10
Substituting value of x= x²+x²=10²+10²=200
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