if 'a' and 'b' are rational nos and 3+√5,find the value of 'a' and 'b'
pls answer step by step.
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ANSWER ⋇⋆✦⋆⋇
STEP BY STEP SOLUTION √
☞ Rationalizing the LHS of
3−
7
3+
7
=a+b
7
.
3−
7
3+
7
×
3+
7
3+
7
=a+b
7
(3)
2
−(
7
)
2
(3+
7
)
2
=a+b
7
9−7
9+7+6
7
=a+b
7
2
16+6
7
=a+b
7
8+3
7
=a+b
7
By comparing both sides,
a=8,b=3
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