If x = 7+ root 5 and y = 7 - root 5 then evaluate x² + y²
Answers
Answered by
1
Answer:
98
Step-by-step explanation:
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Answered by
0
Answer:
It's simple
(7+√5)^2 + (7-√5)^2
49+5+14√5+49+5-14√5
(14√5) gets cancelled,
49+5+49+5
=98+10=108
Step-by-step explanation:
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