Question

The sum of the roots of 8x^2 - 2x = 1 is:

Answer 1

Answer:

1/4

Step-by-step explanation:

Sum of the roots in equation

$ax^2+bx+c=0$

is equal to -b/a

Rewrite the equation given:

$8x^2-2x-1=0$

The sum of the roots is equal to $-\frac{-2}{8} =\frac{1}{4}$

Answer 2

8x^2-2x=1
8x^2-2x-1=0
(4x+1)(2x-1)=0
x = -1/4, 1/2

-1/4 + 1/2 = -1/4 + 2/4 = 1/4