The quadratic equation ax^2-6x+a-2=0, a does not = 0, has one root which is double the other.
a)let the roots be a and 2a. hence find the two equations involving a.
b)find a and the two roots.

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

choose (5, 1.5) and (-1.5,-3.5)

step-by-step explanation:

5 - 1.5 =3.5

-1.5 - (-3.5) = 2

3.5 + 2 =5.5

hope this !