Question

one root of quadratic equation 2xsqure-8x-k=0 is 512.find the other root and the values

Answer 1

Answer:

Step-by-step explanation:

$2x^{2} -8x-k = 0$

And the given root is 512.

It means $x=512$

Now, putting the value of $x$ in the given quadratic eq.

$(512)^{2}-8(512)-k=0 \\262144-4096-k=0\\258048-k =0\\-k= -258048\\k= 258048$