Exponents and solving equations Review Slides

Exponents and solving equations Review Slides

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Recall what it means to "Square" a number

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What does

 $6^2=$  ?

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what does

 $7^2=$  ?

Recall: Taking the Square Root "reverses" the square

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what is

 $\sqrt{36}$  =?

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what is

 $\sqrt{49}=$  ?

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what is

 $\sqrt{144}=$  ?

You can square a variable just like a number

You can also take the square root of a variable term that is squared

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what is

 $\sqrt{a^2}=$  ?

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what is

 $\sqrt{b^2}=$  ?

You can use this to solve an equation with a variable to the second power!

Solve for x

Solve for y

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Solve for x:

 $x^2=81$  

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solve for a:

 $a^2=36$