Question

Pls help for 27b!!!!!!!

Answer 1

Explanation:

`\beta`

is a root of the quadratic

`4 {x}^(2) - 10x + 5`

This quadratic isn't factorable so use the quadratic formula

`- b + - \sqrt{ \frac{b {}^(2) - 4ac }{2a} }`

The plus and minus sign after b means we going to have two roots.

The roots are

`(5 + √(5) )/(4)`

and

`(5 - √(5) )/(4)`

We subsitue those values for Beta.

27a.

`(5)/(2)`

27b.

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