Question #42fd5

1 Answer
Nov 9, 2016

Answer:

#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)"#