Common Core: High School - Algebra : Solve Quadratic Equations by Inspection, Quadratic Formula, Factoring, Completing the Square, and Taking Square Roots: CCSS.Math.Content.HSA-REI.B.4b

Study concepts, example questions & explanations for Common Core: High School - Algebra

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All Common Core: High School - Algebra Resources

6 Diagnostic Tests 97 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

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Example Question #511 : High School: Algebra

Solve 

Possible Answers:

Correct answer:

Explanation:

We can solve this by using the quadratic formula.

The quadratic formula is

, , and  correspond to coefficients in the quadratic equation, which is

In this case  , , and  .

Since the number inside the square root is negative, we will have an imaginary answer.

We will put an , outside the square root sign, and then do normal operations.

Now we split this up into two equations.

So our solutions are   and 

 

Example Question #62 : Reasoning With Equations & Inequalities

Solve 

Possible Answers:

Correct answer:

Explanation:

We can solve this by using the quadratic formula.

The quadratic formula is

, , and  correspond to coefficients in the quadratic equation, which is

In this case  ,  , and .

Since the number inside the square root is negative, we will have an imaginary answer.

We will put an , outside the square root sign, and then do normal operations.

Now we split this up into two equations.

So our solutions are   and 

 

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All Common Core: High School - Algebra Resources

6 Diagnostic Tests 97 Practice Tests Question of the Day Flashcards Learn by Concept
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