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=100 is greater than zero. That means that there are two solutions: .
Quadratic expression can be factored:
Again, the answer is: 7, -3.
Here's your graph:
Step 4. ANSWER: Solutions are 7 and -3.
I hope the above steps and explanation were helpful.
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And good luck in your studies!
Respectfully,
Dr J
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