answer this maths questions
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Answer:
(i) (3+root7)^2
=3^2+root 7^2+2(3)(root7)
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Answer:
1..(3+√7)²=(3)²+2×3×√7+(√7)²
= 9+6√7+7
=16+6√7
2..5√20/5√10=(5√20/5√10)²
=25×20/25×10
=2
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