SOLUTION: Please help me with these three problems. Solve each equation by using the quadratic formula. Give exact and approximate answers to the nearest tenth. 1. 5x^-9x=3=0

Question 37620: Please help me with these three problems.
Solve each equation by using the quadratic formula. Give exact and approximate answers to the nearest tenth.
1. 5x^-9x=3=0
2. x^=54-3x
Find the equation of the axis of symmetry, the coordinates of the vertex, and the coordinates of the x-intercepts, if they exist, for each parabola.
3. f(x) = 2x6-3x-14
Thank you very much
Answer by jessicaherndon(6) (Show Source): You can put this solution on YOUR website!

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=21 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 1.35825756949558, 0.441742430504416. Here's your graph:

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=121 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 3.5, -2. Here's your graph:

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