Roots etc... Q. :) (1 Viewer)

[Smile12345]

Hello All.

Just a quick question....

If the Q was: x^2 + 4x - a = 0; the roots were b+1, b-3; Find the values of a and b

I've got b = -1 (Sum of roots = -b/a)...

Now, how do I get a? I had it a minute ago but have forgotten....

Thanks for your help in advance.

 

[asianese]

Consider the product of the roots.

 

[Smile12345]

Consider the product of the roots.

Yeah thanks... I can substitute b = -1 into product of the roots... A = 0.