simplify by rationalizing the denominator of 3√2dy √5
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Correct option is
D
7
43+30
2
5−3
2
5+3
2
The conjugate of 5−3
2
is 5+3
2
=
5−3
2
5+3
2
×
5+3
2
5+3
2
=
25−18
(5+3
2
)
2
=
7
25+18+2×5×3
2
=
7
43+30
2
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