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Solving Quadratic Equations Using Square Roots  Problem 3
Alissa Fong
Alissa Fong
MA, Stanford University
Teaching in the San Francisco Bay Area
Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts
By now when you guys see quadratic equations with no b term you’re probably ready to go ahead and taking square root to both sides.
But first I need to get the x² piece by itself before I subtract 36 from both sides. OhOh! X² equals 36. This is bad news because what I want to do it take the square root of both sides. But you guys know that there is no real square root of a negative numbers so for this square root I’m just going to write no real solutions.
That’s it, what that means is that no real number ever, ever, ever if I substitute it in there for x² and add 36 I’m never going to get 0 as my answer. So sometimes this happens in Math sometimes there’s problems where there is no real solutions. That’s it, kind of easy, you’re done.
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Alissa Fong
M.A. in Secondary Mathematics, Stanford University
B.S., Stanford University
Alissa has a quirky sense of humor and a relatable personality that make it easy for students to pay attention and understand the material. She has all the math tips and tricks students are looking for.
Sample Problems (14)
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Solving Quadratic Equations Using Square Roots
Problem 1 11,626 viewsSolve:
x² − 225 = 0 
Solving Quadratic Equations Using Square Roots
Problem 2 10,582 viewsSolve:
100x² − 81 = 0 
Solving Quadratic Equations Using Square Roots
Problem 3 8,705 viewsSolve:
x² + 36 = 0 
Solving Quadratic Equations Using Square Roots
Problem 4 1,752 views 
Solving Quadratic Equations Using Square Roots
Problem 5 1,585 views 
Solving Quadratic Equations Using Square Roots
Problem 6 620 views 
Solving Quadratic Equations Using Square Roots
Problem 7 731 views 
Solving Quadratic Equations Using Square Roots
Problem 8 645 views 
Solving Quadratic Equations Using Square Roots
Problem 9 647 views 
Solving Quadratic Equations Using Square Roots
Problem 10 481 views 
Solving Quadratic Equations Using Square Roots
Problem 11 547 views 
Solving Quadratic Equations Using Square Roots
Problem 12 485 views 
Solving Quadratic Equations Using Square Roots
Problem 13 469 views 
Solving Quadratic Equations Using Square Roots
Problem 14 537 views
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