if x is equals to 7 + 4 under root 3 then find the value of x + 1 by X
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Answer:
Step-by-step explanation:
We know that 7+4*(3)^1/2
We need to find x+1/x
substitute value of x -
We get-
[7+4*(3)^1/2+ 1]/ 7+4*(3)^1/2
= [8+4*(3)^1/2] / 7+4*(3)^1/2
Rationalising
[8+4*(3)^1/2]*[7-4*(3)^1/2] / [7+4*(3)^1/2] *[7-4*(3)^1/2]
We get
[56+(28*(3)^1/2)-(32*(3)^1/2)-16*(3)^1/2] / 1
On solving this we get
[56-20*(3)1/2]
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