Math 8.5B Unit 2 review

Math 8.5B Unit 2 review

Multiple Choice

Which expression is a quartic binomial?

• $3h^3−6+h^2+4h^5$

• $−y^4+x$

• $\frac{1}{2}a+2a−8$

• $2p^3$

Multiple Choice

What are the zeros of the function?

 $g(x)=x^2−x−72$  

• -8, -9

• 8, 9

• 8, -9

• -8, 9

Multiple Select

Which expressions below are polynomials?

• $20x^2+y^{\frac{1}{2}}$

• $20x²$

• $\frac{20x^2}{y}$

• $20x²y$

Multiple Choice

Factor completely.

 $x^2+5x+6$  

•  $(x-6)(x+1)$  

•  $(x+3)(x+2)$  

•  $(x-3)(x-2)$  

•  $(x+6)(x+1)$  

Multiple Choice

Add.

 $(6y^3−4y^2+7)+(3y^3−y^2−2y−5)$  

•  $9y^3-5y^2-2y-2$  

•  $3y^3-5y^2-2y+2$  

•  $9y^3-3y^2-2y+2$  

•  $9y^3-5y^2-2y+2$  

Multiple Choice

What is the greatest common factor of

 $8xy^5−16x^2y^3+20x^4y^4$  

•  $8xy5$  

•  $4xy^3$  

•  $4x^4y^5$  

•  $2xy^3$  

Multiple Choice

Multiply and simplify.

 $10w(5w^6+4w^3−2w)$  

•  $50w^7+40w^4-20w^2$  

•  $15w^6+40w^4-20w^2$  

•  $50w^6+40w^3-20w$  

•  $15w^7+5w^4-8w^2$  

Multiple Choice

Factor.

 $81a^{36}−64b^{16}$  

•  $(9a^{18}−8b^8)(9a^{18}+8b^8)$  

•  $(9a^6−8b^4)(9a^6+8b^4)$  

•  $\left(9a^6−8b^4)^2\right)$  

•  $(9a^{18}−8b^8)^2$  

Multiple Choice

Multiply and simplify.

 $(10x^2+7x+11)(2x^2−5x+6)$  

•  $20x^4-36x^2+34x+66$  

•  $12x^4-35x^3+47x^2-13x+17$  

•  $20x^4-36x^3+47x^2-13x+66$  

•  $20x^4+36x^39-47x^2+66$  

Multiple Choice

Factor.

 $12x^5+6x^4−18x^2$  

•  $6x(2x^4+x^3−3x)$  

•  $6x^2(2x^3+x^2−3)$  

•  $6x^2(2x^2+x−3)$  

•  $6(2x^5+x^4−3x^2)$  

Multiple Choice

Multiply.

 $(x+4)(x−9)$  

•  $x^2−5x−36$  

•  $x^2+5x+36$  

•  $x^2−5x+36$  

•  $x^2+5x−36$  

Multiple Choice

Subtract.

 $(8x^4−5x^3+7x^2−4x+1)−(2x^4−5x^3+2x^2−4x+3)$  

•  $10x^4−10x^3+9x^2−8x+4$  

•  $6x^4−10x^3+9x^2−8x+4$  

•  $6x^4−10x^3+5x^2−8x−2$  

•  $6x^4+5x^2−2$