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Example Questions
Example Question #2 : Squaring / Square Roots / Radicals
x2 = 36
Quantity A: x
Quantity B: 6
Quantity B is greater
The two quantities are equal
Quantity A is greater
The relationship cannot be determined from the information given
The relationship cannot be determined from the information given
x2 = 36 -> it is important to remember that this leads to two answers.
x = 6 or x = -6.
If x = 6: A = B.
If x = -6: A < B.
Thus the relationship cannot be determined from the information given.
Example Question #1161 : Psat Mathematics
According to Heron's Formula, the area of a triangle with side lengths of a, b, and c is given by the following:
where s is one-half of the triangle's perimeter.
What is the area of a triangle with side lengths of 6, 10, and 12 units?
12√5
8√14
48√77
14√2
4√14
8√14
We can use Heron's formula to find the area of the triangle. We can let a = 6, b = 10, and c = 12.
In order to find s, we need to find one half of the perimeter. The perimeter is the sum of the lengths of the sides of the triangle.
Perimeter = a + b + c = 6 + 10 + 12 = 28
In order to find s, we must multiply the perimeter by one-half, which would give us (1/2)(28), or 14.
Now that we have a, b, c, and s, we can calculate the area using Heron's formula.
Example Question #1 : Factoring Squares
Simplify the radical expression.
Look for perfect cubes within each term. This will allow us to factor out of the radical.
Simplify.
Example Question #2 : Squaring / Square Roots / Radicals
Simplify the expression.
Use the distributive property for radicals.
Multiply all terms by .
Combine terms under radicals.
Look for perfect square factors under each radical. has a perfect square of
. The
can be factored out.
Since both radicals are the same, we can add them.
Example Question #21 : Powers & Roots Of Numbers
Which of the following expression is equal to
When simplifying a square root, consider the factors of each of its component parts:
Combine like terms:
Remove the common factor, :
Pull the outside of the equation as
:
Example Question #3 : Squaring / Square Roots / Radicals
Which of the following is equal to the following expression?
First, break down the components of the square root:
Combine like terms. Remember, when multiplying exponents, add them together:
Factor out the common factor of :
Factor the :
Combine the factored with the
:
Now, you can pull out from underneath the square root sign as
:
Example Question #3 : Squaring / Square Roots / Radicals
Which of the following expressions is equal to the following expression?
First, break down the component parts of the square root:
Combine like terms in a way that will let you pull some of them out from underneath the square root symbol:
Pull out the terms with even exponents and simplify:
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