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Check it outSolving Quadratic Equations Using Square Roots  Problem 4 528 views
Often, when students see a binomial squared, they can't help but expand it. If you are presented with a quadratic equation with a squared binomial, you could technically expand, combine like terms, write it in standard form, and refactor to solve it BUT there is an easier way: we isolate the squared binomial, square root both sides, being sure the include a positive and negative square root, and then solve for x. This solving method is often used after completing the square or if you are given a parabolic function in vertex form and you want to find the xintercepts.
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Sample Problems (5)
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Solving Quadratic Equations Using Square Roots
Problem 1 9,404 viewsSolve:
x² − 225 = 0 
Solving Quadratic Equations Using Square Roots
Problem 2 8,141 viewsSolve:
100x² − 81 = 0 
Solving Quadratic Equations Using Square Roots
Problem 3 7,110 viewsSolve:
x² + 36 = 0 
Solving Quadratic Equations Using Square Roots
Problem 4 527 views 
Solving Quadratic Equations Using Square Roots
Problem 5 474 views
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