SOLUTION: I need help. Please 1.Solve by applying the Quadratic Formula. Show your work. 2x2 + 7x + 3 = 0 2.Use the discriminant to determine whether the following equations have s

Question 246901: I need help. Please
1.Solve by applying the Quadratic Formula. Show your work.
2x2 + 7x + 3 = 0
2.Use the discriminant to determine whether the following equations have solutions that are: two different rational solutions; two different irrational solutions; exactly one rational solution; or two different imaginary solutions.
9 - 2a2 = 6a + 2
3.Solve by applying the Quadratic Formula. Show your work.
x2 + 4x - 7 = 0

Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
Do you know what the quadratic formula is?
Do you know what the discriminant is?
Look in the glossary (dictionary ) in your math book.
one problem per question please
This should help you

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=25 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: -0.5, -3. Here's your graph:

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