Question 177528: solve 6x²+3x-18=0 using quadratic formula. 2. use the graph of y=x²+4-5 to anwer the following a) without solving the equation or factoring, determine the solution(s) to the equation,x²+4-5=0, using only the graph. expalined how you obtained your answer. 3. calculate the discriminant of x²+4x+4=0
Answer by solver91311(24713)   (Show Source):
You can put this solution on YOUR website! The solutions to a quadratic in the form  are given by:
For your problem:  ,  , and  , but these numbers have a common factor that you can eliminate, namely 3. Hence,  ,  , and  , so:
 . Now just do the arithmetic.
I'm pretty sure you mean  instead of what you wrote.
The discriminant is just the part of the quadratic formula that is under the radical,  , so calculate 
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