Please help me to solve this.

Question

Find x such that f(x)=0 for f(x)=-2x²-x

Answer 1

Hi, Yuliya.

In order to solve for f(x)=0, you have to set the equation equal to zero and solve it.

f(x)=-2x²-x =0

Now factor the equation:

x(-2x-1) =0

So either x =0 or (-2x-1)=0

-2x-1=0

-2x=1

x=1/-2 = -1/2

So the solution is:

x =-1/2 , 0