SOLUTION: 1. Solve the equation 3x+1/x+1 + 2x-1/x-1=1. 2. Solve the equation 4/c+3 + 5/c+4 = 6/c+7. 3. Solve the equation 0.7x - 0.5x^2 - 0.8 = -6. 4. If x is an integer, solve the inequa

Question 986003: 1. Solve the equation 3x+1/x+1 + 2x-1/x-1=1.
2. Solve the equation 4/c+3 + 5/c+4 = 6/c+7.
3. Solve the equation 0.7x - 0.5x^2 - 0.8 = -6.
4. If x is an integer, solve the inequality -8 <2x-3《13.
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
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Limit one problem per post.
Any more, your wasting your time typing.
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0.7x - 0.5x^2 - 0.8 = -6.
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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=10.89 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: -2.6, 4. Here's your graph:

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ANSWER: x=-2.6 or x=4

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