| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.80 |
| Score | 0% | 76% |
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
addition |
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exponents |
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division |
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pairs |
When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
Which of the following expressions contains exactly two terms?
polynomial |
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monomial |
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quadratic |
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binomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
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 AD = 26 and BD = 17, AB = ?
| 9 | |
| 10 | |
| 3 | |
| 17 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BDFactor y2 + 4y + 3
| (y - 1)(y + 3) | |
| (y + 1)(y + 3) | |
| (y - 1)(y - 3) | |
| (y + 1)(y - 3) |
To factor a quadratic expression, apply the FOIL method (First, Outside, Inside, Last) in reverse. First, find the two Last terms that will multiply to produce 3 as well and sum (Inside, Outside) to equal 4. For this problem, those two numbers are 1 and 3. Then, plug these into a set of binomials using the square root of the First variable (y2):
y2 + 4y + 3
y2 + (1 + 3)y + (1 x 3)
(y + 1)(y + 3)