Question

Use the quadratic formula to solve for x.

9x² - 4x-2=0
(If there is more than one solution, separate them with commas.)

Answer 1

Below

Explanation:

*I apologize if this is really messy, I tried my best to organize it*

Here is the quadratic formula : x = -b +/- √b^2 - 4ac / 2a

Plugging in our values ....

x = -(-4) +/- √(-4)^2 - 4(9)(-2) / 2(9)

x = 4 +/- √16 + 72 / 18

x = 4 +/- √88 / 18

We are going to simplify this now

x = 4 +/- 2√22 / 18

Now the little +/- sign is a guarantee that there will be 2 solutions :

x1 = 4 + 2√22 / 18

x2 = 4 - 2√22 / 18

Simplify this by factoring out a 2 :

x1 = 2 + √22 / 9

x2 = 2 - √22 / 9

*If your teacher wanted you to put this in decimal form it would be :

x1 = -0.298935, x2 = 0.74338

Hope this helps! Best of luck <3

Answer 2

pakyu s mga magaganda jan

Explanation:

hahahahhaha