(Points : 4) 5x2 – 3x – 4
5x2 – 3x + 10
5x2 + 3x + 10
17x2 + 3x – 4
Question 2.2. Multiply and simplify: 3a(4a2 – 5a + 12)
(Points : 4) 12a2 – 15a + 36
12a3 – 15a2 + 36a
7a3 – 2a2 + 15a
7a2 – 2a + 15
Question 3.3. Multiply.
–2y2 • xy4
(Points : 4) –2xy6
–2xy8
–2x3y4
4xy6
Question 4.4. Write the polynomial 5x3 + x5 – 8 + 4x in standard form.
(Points : 4) x5 + 5x3 + 4x – 8
x3(x2 + 5) + 4(x – 2)
5x3 + x5 – 8 + 4x
–8 + 4x + 5x3 + x5
Question 5.5. Which expression is a polynomial?
(Points : 4) 
[img alt=”” src=”http://static.k12.com/eli/ecollege/593/3_31562/2_32112_6_31700/f82722bddc3593e805cfe0d2c68cad955c334b10/media/67b91a2c4f4b288ee2470bbab685cbc1342d7834/mathml_e8757f6e953469a2f469318062e0be1897cff101_1.gif”>
[img alt=”” src=”http://static.k12.com/eli/ecollege/593/3_31562/2_32112_6_31700/f82722bddc3593e805cfe0d2c68cad955c334b10/media/2c3a7f8ef0cec35c3c51caac0c112851dd66cfee/mathml_8162d7c8bfbc4e3bbcfcbaf50253ad704e99cf6b_1.gif”>
[img alt=”” src=”http://static.k12.com/eli/ecollege/593/3_31562/2_32112_6_31700/f82722bddc3593e805cfe0d2c68cad955c334b10/media/58cfa64ab39d35467cfcbcbe1d00d1a4810443bc/mathml_b6463eac13bd9a7d744f2515d960232a4e89a534_1.gif”>
Question 6.6. Express the perimeter of the triangle as a polynomial.
[img alt=”” width=”193px” height=”93px” src=”http://static.k12.com/eli/ecollege/593/3_31562/2_32112_6_31700/f82722bddc3593e805cfe0d2c68cad955c334b10/media/13d0978a1b24d8ba081b0ff20e8d92707d04333c/mediaasset_1280854_1.jpg” >
(Points : 4) –11x – 5
11x – 4
10x – 5
11x + 4
Question 7.7. Simplify the expression.
23 • 25
(Points : 4) 415
48
215
28
