Question

answer questions 15 and 16

Answer 1

16th one is pretty easy,

Question is, (2+√3) is one of the zero's of the polynomial x² - 4x + 1

Let another 0 of the polynomial be Y,

Now Y + (2+√3) = -(-4)/1 [i.e -b/a],

=> Y = 4 - 2 - √3,
=> Y = 2 - √3,

So another 0 of the polynomial is 2-√3,

15th one is medium sum, I am trying a shortcut method, As soon as I get it, I will post it here,


Hope you understand 16,

Have a great day !