Selected Solutions
The following is a sample of many of the exercises we plan to solve, to show how some of the seemingly difficult problems can be easily solved.
Problem 1: Solve for
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Now isolating :
Finally:
Answer:
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Problem 2: Given
Find
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Let’s find
Let’s simplify:
We get
Let’s simplify:
We get:
Finally:
Answer:
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Problem 3: Solve for
Solution
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We can see the factors:
Now we can say:
Any factor can be a zero:
Roots:
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Problem 4: Solve for
Solution
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Looking At factors and ratio of 2 and 15 we can see that -2 is a root.
When we divide:
We now solve the quadratic:
Using our general method without the factors of 2 and 15:
We have:
p=-1.005925926
q=0.380620027
Case
We get the same values.
Roots:
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Problem 5: Solve for
Solution
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By inspecting the factors of and and their ratios, we discover that and are roots.
Facroring these 2 we get:
Since these are roots, let’s drop the denominator.
Solving:
Double root since
Roots:
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Problem 6: Solve for
Solution
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We can see that 6 is a root:
Factoring the quadratic:
Finally we can say:
And to solve, any facor can be 0:
Finally:
Roots:
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Problem 7: Solve for
Solution
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We can see that is a root.
When we divide, we get:
Solving for the quadratic, we get complex roots:
Verification using the general method:
The roots are the same as above.
Roots:
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