simplify A) (√5+√2 )^2 B) (√5-√2)(√5+√2)
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A) (√5+√2)²
=(√5)²+(√2)²+2(√5)(√2) ..........[by identity(a+b)²]
=5+2+2√10
=7+2√10
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Answer:
(√5-√2)(√5+√2) = 5 - 2 = 3=5−2=3
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