SOLUTION: find all real values of x such that f(x)=0: {{{f(x)=x^2-9}}} please help thanks

SOLUTION: find all real values of x such that f(x)=0: {{{f(x)=x^2-9}}} please help thanks

Algebra.Com

Question 52851: find all real values of x such that f(x)=0:

please help
thanks
Answer by rchill(405) (Show Source): You can put this solution on YOUR website!
We rewrite the equation to . Add 9 to both sides to get . Now take the square root of both sides and we see that x=3 or x=-3.
RELATED QUESTIONS
Find all real values of x such that f(x)=0 f(x)=49x^2-9 (answered by jim_thompson5910)

find all real values of x such that f(x)=0: f(x)=15-3x please help... (answered by rchill)

find all real values of x such that f(x)=0:... (answered by chibisan)

Find all real values of x such that f(x) = 0 , please! Thank you :) f(x) = x3... (answered by stanbon)

Find all the real values of x such that f(x)= 0 f(x)=(12-x^2)/5. (answered by Fombitz)

Find all real values of x such that f(x) = 0. f(x) = x^3 −... (answered by ikleyn)

List all real values of x such that f(x) = 0... (answered by psbhowmick)

find all real values of x for which f(x)=g(x): f(x)=x^2, g(x)=x+2 please help... (answered by rchill)

List all real values of x such that f(x) = 0. f(x) = {-6 x +... (answered by stanbon)