| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.81 |
| Score | 0% | 76% |
Breaking apart a quadratic expression into a pair of binomials is called:
normalizing |
|
squaring |
|
factoring |
|
deconstructing |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
Simplify 5a x 5b.
| 25a2b2 | |
| 25\( \frac{b}{a} \) | |
| 25ab | |
| 10ab |
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.
5a x 5b = (5 x 5) (a x b) = 25ab
What is the area of a circle with a radius of 3?
| 81π | |
| 5π | |
| 9π | |
| 2π |
The formula for area is πr2:
a = πr2
a = π(32)
a = 9π
What is 4a + 2a?
| 2a2 | |
| 6 | |
| 8a2 | |
| 6a |
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.
4a + 2a = 6a
If angle a = 48° and angle b = 39° what is the length of angle c?
| 93° | |
| 91° | |
| 85° | |
| 72° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 48° - 39° = 93°