please explain if (7+√5)/(7-√5) + (7-√5)/(7+√5) = a+7√5b find value of a and b
Answers
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0
Step-by-step explanation:
7
a+
11
7
5
b=
7−
5
7+
5
−
7+
5
7−
5
=
(7+
5
)(7−
5
)
(7+
5
)
2
−(7−
5
)
2
=
49−5
49+5+14
5
−49−5+14
5
=
44
28
5
=
11
7
5
a+
11
7
5
b=0+
11
7
5
(1)
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