## anonymous 3 years ago 16x^2 + 24x + 9 = 0

1. anonymous

|dw:1346056586290:dw| Looking for a way to do this without using a calculator; just pencil and paper... if somehow I can do it by avoiding big numbers?

2. anonymous

|dw:1346110662921:dw|

3. anonymous

I couldn't see that! Thanks @quennie

4. anonymous

hehe .. you're welcome .. :) it's my pleasure ..

5. anonymous

ok lets do it...id say start by simplifying discriminant$\Delta=24^2-4\times16\times9=24^2-24\times24$

6. anonymous

|dw:1346110890440:dw| so, bcos of having a perfect square .. just .. find the value of x ..