13. Simplify
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Answered by
1
Step-by-step explanation:
12.211
its answer goes soo long but still that is right answer
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Answered by
1
Step-by-step explanation:
using (a+b)^2= a^2 + 2ab + b^2
(5+√5)^2 = 5^2 +2×5×√5 + (√5)^2
= 25 + 10√5 + 5
= 30 + 10√5
52.3
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