Question

solve .x=7+√40,find the value of √x+1/√x

Answer 1

Answer:

X=7+√40

x=7+2√10

=(√5)²+(√2)²+2×√2×√5

=(√5+√2)²

√x=√5+√2

1/√x=1/√5+√2

=√5-√2/3

√x+1/√x=√5+√2 + √5-√2/3

=4√5+2√2/3

ie 2/3( 2√5+√2)

hope this is helpful

Answer 2

$\frac{2}{3(2 \sqrt{5} + \sqrt{2} }$

righr answer.........