9000101706
Level:
B
Factor the following polynomial.
\[
8x^{4} - 48x^{3} + 72x^{2}
\]
\(8x^{2}\left (x - 3\right )^{2}\)
\(- 8x^{2}\left (3 - x\right )^{2}\)
\(8\left (x^{2} - 3\right )^{2}\)
\(8x\left (x^{2} - 3\right )^{2}\)
Polynomials and fractions
9000101710
Level:
B
Factor the following polynomial.
\[
x^{2}y - x^{2}z - 4xyz + 4xy^{2} + 4y^{3} - 4y^{2}z
\]
\(\left (y - z\right )\left (x + 2y\right )^{2}\)
\(\left (y - z\right )\left (x - 2y\right )^{2}\)
\(\left (y - z\right )\left (x^{2} + 4y + 4y^{2}\right )\)
\(\left (y + z\right )\left (x - 2y\right )^{2}\)
9000146201
Level:
B
Expand the following expression.
\[
\left (2x^{3} - y^{2}\right )^{3}
\]
\(8x^{9} - 12x^{6}y^{2} + 6x^{3}y^{4} - y^{6}\)
\(8x^{9} - 4x^{6}y^{2} + 2x^{3}y^{4} - y^{6}\)
\(8x^{6} - 12x^{5}y^{2} + 6x^{3}y^{4} - y^{5}\)
\(8x^{6} - 4x^{5}y^{2} + 2x^{3}y^{4} - y^{5}\)
9000146202
Level:
B
Expand the following expression.
\[
\left (a^{2} + \sqrt{3}b\right )^{3}
\]
\(a^{6} + 3\sqrt{3}a^{4}b + 9a^{2}b^{2} + 3\sqrt{3}b^{3}\)
\(a^{6} + \sqrt{3}a^{4}b + 3a^{2}b^{2} + 3\sqrt{3}b^{3}\)
\(a^{5} + 3\sqrt{3}a^{4}b + 9a^{2}b^{2} + 3\sqrt{3}b^{3}\)
\(a^{5} + \sqrt{3}a^{4}b + 3a^{2}b^{2} + 3\sqrt{3}b^{3}\)
9000146207
Level:
B
Factor the following expression.
\[
4a^{2} -\left (a - 1\right )^{2}
\]
\(\left (a + 1\right )\left (3a - 1\right )\)
\(\left (a - 1\right )\left (3a - 1\right )\)
\(\left (a + 1\right )\left (3a + 1\right )\)
\(\left (a - 1\right )\left (3a + 1\right )\)
9000146208
Level:
B
Factor the following expression.
\[
\left (2x - 1\right )^{2} -\left (x + 3\right )^{2}
\]
\(\left (x - 4\right )\left (3x + 2\right )\)
\(\left (x - 4\right )\left (3x - 2\right )\)
\(\left (x + 4\right )\left (3x + 2\right )\)
\(\left (x + 4\right )\left (3x - 2\right )\)
1003032402
Level:
C
The polynomial \( 27+x^3 \) is equal to a product:
\( (3+x)\left(9-3x+x^2\right) \)
\( (3+x)^2(3-x) \)
\( (3-x)\left(9+3x+x^2\right) \)
\( (3+x)^3 \)
1003032403
Level:
C
Reducing the rational expression \( \frac{4m^2-4mn+n^2}{8m^3-n^3} \) we get:
\( \frac{2m-n}{4m^2+2mn+n^2} \)
\( \frac{m-4mn+1}{2m-n} \)
\( \frac{2m-n}{4m^2-4mn+n^2} \)
\( \frac{2m-n}{4m^2+4mn+n^2} \)
1003032404
Level:
C
Simplifying the rational expression \( \frac{x^6-y^6}{x^2-y^2} \) we get:
\( \left(x^2-xy+y^2\right)\left(x^2+xy+y^2\right) \)
\( x^4-y^4 \)
\( x^3 - y^3 \)
\( \left(x^2-2xy+y^2\right)\left(x^2+2xy+y^2\right) \)
1003032502
Level:
C
Let the polynomial \( (x-2)^5-(x+2)^5 \) be expressed in the form \( a_5x^5+a_4x^4+a_3x^3+a_2x^2+a_1x+a_0 \). Give the sum of \( a_5+a_4+a_3+a_2+a_1 \).
\( -180 \)
\( -244 \)
\( -242 \)
\( -212 \)