Question

if x is equal to root 5 plus 3 upon 2 find x square plus 1 upon x square​

Answer 1

ANSWER : 7

X=(√5+3)/2

2X=√5+3

4X2=5+9+6√5

4X2=14+6√5

X2=(14+6√5)/4 ......... . . eq (1)

Now, 1/X2 =4/(14+6√5)

=2/(7+3√5)

=2(7-3√5)/(7+3√5)(7-3√5)

After rationalising , we get ,

=(14- 6√5)/4..........eq(2)

Now, X2+1/X2= eq(1)+eq(2)

=(14+6√5+14-6√5)/4

= 28/4

=7

Answer 2

Step-by-step explanation:

वन अपॉन रूट 5 प्लस रूट 2 = ?