9000101607
Level:
B
Expand \(\left (x^{2} - y\right )^{3} -\left (y + x^{2}\right )^{3}\).
\(- 6x^{4}y - 2y^{3}\)
\(- 2y^{3}\)
\(- 6x^{4}y - 2y^{3} + 6x^{2}y^{2}\)
\(6x^{2}y - 2y^{3}\)
Polynomials and Rational Expressions
9000101608
Level:
B
Expand \(\left (3x + y\right )\left (9x^{2} - 3xy + y^{2}\right )\).
\(27x^{3} + y^{3}\)
\(27x^{3} - y^{3}\)
\((3x + y)^{3}\)
\(27x^{3} + 3y^{3}\)
9000101710
Level:
B
Factor the following polynomial.
\[
x^{2}y - x^{2}z - 4xyz + 4xy^{2} + 4y^{3} - 4y^{2}z
\]
\(\left (y - z\right )\left (x + 2y\right )^{2}\)
\(\left (y - z\right )\left (x - 2y\right )^{2}\)
\(\left (y - z\right )\left (x^{2} + 4y + 4y^{2}\right )\)
\(\left (y + z\right )\left (x - 2y\right )^{2}\)
9000101704
Level:
B
Factor the following polynomial.
\[
16x^{2}y^{4} - 25x^{4}y^{2}
\]
\(\left (4xy^{2} - 5x^{2}y\right )\left (4xy^{2} + 5x^{2}y\right )\)
\(\left (4xy - 5x^{2}y\right )\left (4xy^{2} + 5xy\right )\)
\(\left (4x^{2}y^{2} - 5xy\right )\left (4x^{2}y^{2} + 5xy\right )\)
\(\left (4xy^{2} - 5x^{2}y\right )^{2}\)
9000101706
Level:
B
Factor the following polynomial.
\[
8x^{4} - 48x^{3} + 72x^{2}
\]
\(8x^{2}\left (x - 3\right )^{2}\)
\(- 8x^{2}\left (3 - x\right )^{2}\)
\(8\left (x^{2} - 3\right )^{2}\)
\(8x\left (x^{2} - 3\right )^{2}\)
9000101708
Level:
C
Factor the following polynomial.
\[
8x^{3} - 27
\]
\(\left (2x - 3\right )\left (4x^{2} + 6x + 9\right )\)
\(\left (2x - 3\right )\left (4x^{2} - 6x + 9\right )\)
\(\left (2x + 9\right )\left (4x^{2} - 6x + 9\right )\)
\(\left (2x - 3\right )\left (4x^{2} + 6x - 9\right )\)
9000088810
Level:
A
Simplify the following expression.
\[
\left (x -\frac{1}
{x}\right )\cdot \left (1 - \frac{x}
{x + 1}\right )
\]
\(\frac{x - 1}
{x} \)
\(\frac{x - 1}
{x + 1}\)
\(\frac{1 - x}
{x + 1}\)
\(\frac{1 - x}
{x} \)
9000088808
Level:
B
Find the common denominator of the following three fractions.
\[
\text{$ \frac{a}
{a^{2}-ab}\ ,\qquad \frac{-b}
{a^{2}-b^{2}} \ ,\qquad \frac{2b}
{ab+b^{2}} $}
\]
\(ab(a^{2} - b^{2})\)
\(ab(a - b)\)
\(ab(a + b)\)
\(ab(a + b)^{2}\)
9000087502
Level:
C
Assuming \(x\in \mathbb{R}\setminus \left \{\pm 1\right \}\),
find the quotient of the polynomials:
\[
(-2x^{4} - 3x^{2} + 3) : (x^{2} - 1)
\]
\(- 2x^{2} - 5 - \frac{2}
{x^{2}-1}\)
\(- 2x^{2} - 5 + \frac{2}
{x^{2}-1}\)
\(2x^{2} + 5 - \frac{2}
{x^{2}-1}\)
\(2x^{2} + 5 + \frac{2}
{x^{2}-1}\)
9000087503
Level:
C
Assuming \(x\in \mathbb{R}\setminus \left \{-\frac{3}
{2}\right \}\),
find the quotient of the polynomials:
\[
(x^{2} + x + 1) : (2x + 3)
\]
\(\frac{1}
{2}x -\frac{1}
{4} + \frac{\frac{7}
{4} }
{2x+3}\)
\(\frac{1}
{2}x -\frac{1}
{2} + \frac{\frac{7}
{4} }
{2x+3}\)
\(x + 2 + \frac{7}
{2x+3}\)
\(x - 2 + \frac{7}
{2x+3}\)