If a = 7+4 root 3 , find the value of a + a/1
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Answered by
1
question should be a+1/a
1/a = 1/(7+4√3)
rationalizing it
1/(7+4√3) = 1×(7-4√3)/(7+4√3)×(7-4√3)
= (7-4√3)/(49-48)
=(7-4√3)
so,
a +1/a = (7+4√3) +(7-4√3) = 14
1/a = 1/(7+4√3)
rationalizing it
1/(7+4√3) = 1×(7-4√3)/(7+4√3)×(7-4√3)
= (7-4√3)/(49-48)
=(7-4√3)
so,
a +1/a = (7+4√3) +(7-4√3) = 14
Answered by
1
a=7+4√3
a+a/1=a+a=7+4√3+7+4√3
⇒14+8√3.
a+a/1=a+a=7+4√3+7+4√3
⇒14+8√3.
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