| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.68 |
| Score | 0% | 74% |
Breaking apart a quadratic expression into a pair of binomials is called:
deconstructing |
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squaring |
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normalizing |
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factoring |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
If a = 3, b = 2, c = 3, and d = 5, what is the perimeter of this quadrilateral?
| 14 | |
| 23 | |
| 30 | |
| 13 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 3 + 2 + 3 + 5
p = 13
What is 3a - 5a?
| -2a | |
| 15a | |
| -2a2 | |
| 8a2 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
3a - 5a = -2a
Simplify (9a)(8ab) - (9a2)(9b).
| 153a2b | |
| 153ab2 | |
| 9ab2 | |
| -9a2b |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
(9a)(8ab) - (9a2)(9b)
(9 x 8)(a x a x b) - (9 x 9)(a2 x b)
(72)(a1+1 x b) - (81)(a2b)
72a2b - 81a2b
-9a2b
On this circle, line segment AB is the:
circumference |
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radius |
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diameter |
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chord |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).