IndietroSolving Quadratic Equations by the Square Root Method – College Algebra Study Guide
Guida di studio - Note intelligenti
Appunti personalizzati basati sui tuoi materiali, ampliati con definizioni chiave, esempi e contesto.
Q4. Solve by Square Root Method:
Background
Topic: Quadratic Equations – Square Root Method
This question tests your ability to solve a quadratic equation by isolating the squared term and then applying the square root property.
Key Terms and Formulas:
Quadratic Equation: An equation of the form .
Square Root Property: If , then .
Step-by-Step Guidance
Subtract 4 from both sides to isolate the quadratic term: .
Simplify the right side: .
Divide both sides by 2 to solve for : .
Now, apply the square root property to solve for .
Try solving on your own before revealing the answer!
Final Answer:
After isolating , you take the square root of both sides, remembering to include both the positive and negative roots.
Q5. Solve by Square Root Method:
Background
Topic: Quadratic Equations – Square Root Method
This question tests your ability to solve a quadratic equation where the variable is inside a binomial squared.
Key Terms and Formulas:
Square Root Property: If , then .
Step-by-Step Guidance
Apply the square root property to both sides: .
Simplify to get two possible values for .
Solve for by subtracting 3 from both possible values.
Try solving on your own before revealing the answer!
Final Answer: and
Taking the square root gives or , so subtracting 3 yields the two solutions.
Q6. Solve by Square Root Method:
Background
Topic: Quadratic Equations – Square Root Method
This question tests your ability to solve a quadratic equation by isolating the squared term and then applying the square root property, including handling constants and coefficients.
Key Terms and Formulas:
Square Root Property: If , then .
Solving for when the variable is inside a binomial squared.
Step-by-Step Guidance
Add 48 to both sides to isolate the squared term: .
Apply the square root property: .
Simplify (factor it if possible).
Solve for by first adding 5 to both sides, then dividing by 4.
Try solving on your own before revealing the answer!
Final Answer:
, so , and solving for gives the answer above.