Answers

2014-04-14T20:18:41+05:30
(7+√5)(7-√5) + (7+√5)(7-√5)
=(49-5) + (49-5)                                   { (a-b)(a+b)=(a*a) - (b*b) }
=44+44
=88
=a rational number
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  • Brainly User
2014-04-14T21:24:50+05:30
Yes the product of 2 irrational no. is a rational,
(7+√5)(7-√5)+(7+√5)(7-√5)
=(49-5)+(49-5)
=44+44
=88 
and this is a rational no.

1 5 1