Question

Question #42fd5

Answer 1

`x=-2`

Explanation:

The zero / root of f(x) is the value of x that makes f(x) = 0.

That is solve 2x + 4 = 0

subtract 4 from both sides of the equation.

`2xcancel(+4)cancel(-4)=0-4`

`rArr2x=-4`

To solve for x, divide both sides by 2.

`(cancel(2) x)/cancel(2)=(-4)/2`

`rArrx=-2" is the zero of f(x)"`