| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.30 |
| Score | 0% | 66% |
Breaking apart a quadratic expression into a pair of binomials is called:
factoring |
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squaring |
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deconstructing |
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normalizing |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
If the length of AB equals the length of BD, point B __________ this line segment.
intersects |
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midpoints |
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trisects |
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bisects |
A line segment is a portion of a line with a measurable length. The midpoint of a line segment is the point exactly halfway between the endpoints. The midpoint bisects (cuts in half) the line segment.
What is 9a7 - 6a7?
| 54a14 | |
| 3a14 | |
| 15 | |
| 3a7 |
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.
9a7 - 6a7 = 3a7
Simplify (y + 6)(y - 9)
| y2 - 15y + 54 | |
| y2 + 15y + 54 | |
| y2 + 3y - 54 | |
| y2 - 3y - 54 |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses:
(y + 6)(y - 9)
(y x y) + (y x -9) + (6 x y) + (6 x -9)
y2 - 9y + 6y - 54
y2 - 3y - 54
What is the circumference of a circle with a radius of 2?
| 8π | |
| 4π | |
| 6π | |
| 15π |
The formula for circumference is circle diameter x π. Circle diameter is 2 x radius:
c = πd
c = π(2 * r)
c = π(2 * 2)
c = 4π