help me with algebra 7

1. Subtract and simplify: (11x2 + 7) – (6x2 + 3x â€“ 3)

(Points : 4)

 
 

Question 2.2. Multiply and simplify: 3a(4a2 â€“ 5a + 12)

(Points : 4)

 
 

Question 3.3. Multiply.

–2y2 â€¢ xy4

(Points : 4)

 
 

Question 4.4. Write the polynomial 5x3 + x5 â€“ 8 + 4x in standard form.

(Points : 4)

 
 

Question 5.5. Which expression is a polynomial?

(Points : 4)

 
 

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)

 
 


 
 


 
 


 
 

Question 7.7. Simplify the expression.

23ʉۢ 25

(Points : 4)

 
 


 
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