Tuesday

July 22, 2014

July 22, 2014

Posted by **kim jung hee** on Monday, September 2, 2013 at 3:24am.

- maths -
**Graham**, Monday, September 2, 2013 at 3:46amIf 2x²+4x+1 = 0

Then: x = (-2±√2)/2

let α = (-2+√2)/2

let β = (-2-√2)/2

log_2(α) + log_2(β)

= log_2(αβ)

= log_2((-2+√2)(-2-√2)/4)

= log_2(1/2)

= -1

**Related Questions**

maths - If alpha beta are the roots of a^2 +bx + c = 0. find the values of (beta...

maths - if alpha and beta are the zeros of the polynomial 2x^2-4x+5 then find ...

maths - Given that the roots of 2x^2-4x+5 are alpha and beta,find the value of...

Math ( Polynomial ) - This time three questions - 1. If (x^2 - 1 ) is a factor ...

Math ( Polynomial ) - This time three questions - 1. If (x^2 - 1 ) is a factor ...

Math - If alpha and beta are the zeros of the polynomial ax^2 + bx + c then ...

maths - If alpha and beta are the zeros of the polynomial p(x)=x^2+x+1 then find...

trig - evaluate the following in exact form, where the angeles alpha and beta ...

physics - Two radar stations A and B, are separated by horizontal distance of (...

math - if alpha and beta are 2 different values of θ lying between 0 and 2...