precalc Question on a previous question
posted by muffy on .
On the question below, Bob Pursley said it was correct, however, I just wanted to make sure that it's not supposed to have another x value since it has x^2 in it.
Solve the inequality:
(2x3)(4x)+x^2=>(3x+4)^2
I did 2x3*4x
9x^212x on the left side
on the right side:
9x^2+24x+16
I substracted everything on the right side over to the left and made it => zero
9x^212x9x^224x16=>0
36x16=>0
x=<4/9
I'm not sure if this is right or if I made an error somewhere.
Math  bobpursley, Saturday, September 12, 2009 at 2:49pm
it is correct.
Math  muffy, Saturday, September 12, 2009 at 2:54pm
THANKS!

Figured it out  sorry for doubting you. It's right!