Use the quadratic formula to solve the equation 4x^2 - 6x 10 = 0

Question

asett · Answer

Is there something missing between the 6x and 10?

happpily · Answer

yeah im so sorry its $$4^{2}- 6x - 10 = 0$$

asett · Answer

np. Do you see anything we can take out?

asett · Answer

We can take out a 2: from 4x^2, 6x, and 10, leaving us with 2x^2, 3x, and 5.

happpily · Answer

oh ok got it.

asett · Answer

Yay! So now, we are left with$$2(2x ^{2}-3x-5)$$

asett · Answer

The cool thing about this is, do you notice that the difference between the coefficient of 2x^2 and 5 is -3?

happpily · Answer

oh true

asett · Answer

So, my math teacher told me this (it is so cool!). When we split it into two groups, the 2x and the -5 have to be together! Based on this, can you come up with the answer?

happpily · Answer

i got x = 5/2 x= 1 .... ?

anonymous · Answer

the formula given is wrong here lol

asett · Answer

Are you sure that it is +1?

asett · Answer

@ChiefArnav ... techinical issues (like my spelling)

happpily · Answer

oh no its negative!!

happpily · Answer

sorry about that!

asett · Answer

Correct! Great job. Movin' right along...

asett · Answer

No problem, I have a hard time keeping my positives/negatives straight too. : )

happpily · Answer

thank you for helping me figure it out once again! :D

asett · Answer

Your welcome!