Basic Math Examples

$r^{2} = 0.36 + 0.64$

Step 1

Add

$0.36$ and

$0.64$ .

$r^{2} = 1$

Step 2

Take the specified root of both sides of the equation to eliminate the exponent on the left side.

$r = \pm \sqrt{1}$

Step 3

Simplify

$\pm \sqrt{1}$ .

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Step 3.1

Rewrite

$1$ as

$1^{2}$ .

$r = \pm \sqrt{1^{2}}$

Step 3.2

Pull terms out from under the radical, assuming positive real numbers.

$r = \pm 1$

Step 4

The complete solution is the result of both the positive and negative portions of the solution.

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Step 4.1

First, use the positive value of the

$\pm$ to find the first solution.

$r = 1$

Step 4.2

Next, use the negative value of the

$\pm$ to find the second solution.

$r = - 1$

Step 4.3

The complete solution is the result of both the positive and negative portions of the solution.

$r = 1, - 1$