Question

What is the product of the roots of the quadratic equation 2x^2-x=4?

1. 1/2
2. 2
3. -2
4. 4

Answer 1

`-2`

Explanation:

For

`ax^2+bx+c =0`

the product of the roots is `c/a`. Your equation can be written as

`2x^2-x-4=0`