Question

If a=√(3+√5)/√(3-√5) ,then what is the value of a²- a + 1 ?

Answer 1

Answer:

a=√3+√*√5/√3-√*√5

a=√3+√3 (√*√5 cancelout -√*√5)

a= 2√3

a2-a+1=2√3^2-2√3+1

2√3*2√3-2√3+1

4*3-2√3+1 ( squaring)

12-2√3+1

13-2√3

13-3.46 (value of 2√3)

=9.54

hope you may solve this question again in your note book by your self