SOLUTION: How would you do these problems??? 5. Solve: 6x2 + 12x = 0 6. Solve each problem by using the quadratic formula. Write solutions in simplest radical form. 2x2 - 2

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Question 195103: How would you do these problems???

5. Solve: 6x2 + 12x = 0



6. Solve each problem by using the quadratic formula. Write solutions in simplest radical form.
2x2 - 2x -1 = 0
Answer by vleith(2983)   (Show Source): You can put this solution on YOUR website!


So either 6x=0 or x+2 = 0
x =0 or x = -2

2)

Use this URL for quadratic equations --> http://www.algebra.com/algebra/homework/quadratic/quadratic.solver
Solved by pluggable solver: SOLVE quadratic equation with variable
Quadratic equation (in our case ) has the following solutons:



For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=12 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 1.36602540378444, -0.366025403784439. Here's your graph:
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