Difference between revisions of "Square root property"
(Created page with "The '''square root property''' is a method for solving quadratic equations. ==Method== First we must convert the quadratic to either t...") |
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===First format=== | ===First format=== | ||
| − | <math>x^2=18</math> take the square root of both sides | + | <math>x^2=18</math> |
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| + | take the square root of both sides | ||
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<math>x=\pm\sqrt{18}</math> | <math>x=\pm\sqrt{18}</math> | ||
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===Second format=== | ===Second format=== | ||
| − | <math>(3x+4)^2=5</math> take the square root of both sides | + | <math>(3x+4)^2=5</math> |
| − | <math>3x+4=\pm\sqrt{5}</math> isolate <math>x</math> | + | |
| + | take the square root of both sides | ||
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| + | <math>3x+4=\pm\sqrt{5}</math> | ||
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| + | isolate <math>x</math> | ||
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<math>x=\frac{\pm\sqrt{5}-4}{3}</math> | <math>x=\frac{\pm\sqrt{5}-4}{3}</math> | ||
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and those are the roots. | and those are the roots. | ||
Latest revision as of 23:55, 15 May 2014
The square root property is a method for solving quadratic equations.
Method
First we must convert the quadratic to either the form 
or 
.
First format
take the square root of both sides
so the roots are 
and 
.
Second format
take the square root of both sides
isolate 
and those are the roots.
