SOLUTION: solve 6x�+3x-18=0 using quadratic formula. 2. use the graph of y=x�+4-5 to anwer the following a) without solving the equation or factoring, determine the solution(s) to the equati

Question 177528: solve 6x�+3x-18=0 using quadratic formula. 2. use the graph of y=x�+4-5 to anwer the following a) without solving the equation or factoring, determine the solution(s) to the equation,x�+4-5=0, using only the graph. expalined how you obtained your answer. 3. calculate the discriminant of x�+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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