Grade 9Algebra
if x = 3 + 2 root 2 then value of root x + 1/ root x =
if x = 3 + 2 root 2 then value of root x + 1/ root x =
2 Answers
Akshay
3+rt2 = (1+rt2)2, hope that will help
ATB
ATB
Manoj
1/x=1/3+^2*3-2^2/3-2^2=3-2^2/(3)^2-(2^2)^2=3-2^2/9-8=3-2^2.
(^x-1/^x)^2=x-1/x+2=(3+2^2)+(3-2^2)+2=8.
So,(^x-1/^x)^2=^8-2^2=2^2
Other Related Questions on algebra
How do you write “the product of 18 and q” as an algebraic expression?
How do you write “the product of 18 and q” as an algebraic expression?
algebra
Last Activity: 2 Years ago