Question #42fd5
1 Answer
Nov 9, 2016
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)"#
