Solve the given equation by using the quadratic formula:
2x2 - 3x – 4 = 0. What value is under the radical in your answer?
(Note: You are asked only to identify the value under the radical, not the solution to the equation.)

Question

Solve the given equation by using the quadratic formula:
2x2 - 3x – 4 = 0. What value is under the radical in your answer? 
(Note: You are asked only to identify the value under the radical, not the solution to the equation.)

anonymous · Answer

Answer choices - 
32
		
25
		
23
		
41

anonymous · Answer

so simple here a= 2
b= -3
c= -4
put it in 
$$-b \pm \sqrt{b^2 - 4ac}/2a$$

anonymous · Answer

I still don't know how to do it

anonymous · Answer

just put values in the above for formula

anonymous · Answer

I did, but I don't even know how to do the above formula lol

anonymous · Answer

the general form of quadratic equation is:
ax^2 + bx + c=0
compare your the given equation with the general form to get values of a,b & c
put them in formula to get answer 
you'll get two root or solution or values of X

anonymous · Answer

So confused...

anonymous · Answer

which thing is confusing you ???

anonymous · Answer

Like I understand to plug in the values, but I don't know how to solve the equation as the whole.

anonymous · Answer

so did you got how to get the values of a , b ,c???
you just want me solve it???

anonymous · Answer

Well I have no clue how to solve it lol

anonymous · Answer

just in a min

anonymous · Answer

ok :)

anonymous · Answer

Hello?

anonymous · Answer

2.3 is your answer and now the step

anonymous · Answer

23? 
2.3 isn't an answer choice

anonymous · Answer

yap its 2.3 ... 23 is way to big to be the solution check the answers

anonymous · Answer

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