Question: Quadratic Formula

**dwatkins741** · May 18th 2010, 03:05 PM

I keep making some type of mistake on this problem, can someone please show how to work it out? I think maybe I get the signs mixed up. I am supposed to work it using the quadratic formula.

s^2 = 9 + s(1-2s)

Thanks!!

**pickslides** · May 18th 2010, 03:09 PM

$s^2 = 9 + s(1-2s)$

$s^2 = 9 + s-2s^2$

$3s^2 -s- 9 =0$

$<br /> s = \frac{-(-1)\pm\sqrt{(-1)^2-4\times 3 \times -9}}{2\times 3}=\dots<br />$

can you finish it?

**dwatkins741** · May 19th 2010, 01:59 PM

I wasn't distributing the s before using the quadratic formula. Thanks so much!!

Thread: Question: Quadratic Formula

LinkBack

Thread Tools

Display

Question: Quadratic Formula

Now I get it

Similar Math Help Forum Discussions

question about deriving the quadratic formula

Quadratic Formula & Slope of a line Question

Quadratic formula question

Quadratic Formula

Question about quadratic formula/parabolas

Search Tags