| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.68 |
| Score | 0% | 74% |
Which of the following expressions contains exactly two terms?
polynomial |
|
binomial |
|
quadratic |
|
monomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
What is 8a3 - 2a3?
| 10a6 | |
| 6a6 | |
| 6a3 | |
| a36 |
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.
8a3 - 2a3 = 6a3
If b = -4 and x = 5, what is the value of -7b(b - x)?
| -56 | |
| 0 | |
| -252 | |
| -126 |
To solve this equation, 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.)
-7b(b - x)
-7(-4)(-4 - 5)
-7(-4)(-9)
(28)(-9)
-252
What is the circumference of a circle with a radius of 6?
| 2π | |
| 10π | |
| 12π | |
| 32π |
The formula for circumference is circle diameter x π. Circle diameter is 2 x radius:
c = πd
c = π(2 * r)
c = π(2 * 6)
c = 12π
What is 8a5 + 4a5?
| 4a10 | |
| a510 | |
| 12a5 | |
| 4 |
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.
8a5 + 4a5 = 12a5