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Polynomials

1. Simplify : −5x – 2y + x – 10y

2. Simplify : -3(x – 6)

3. Simplify : (2x2− 4x + 3) − (−x3 + 5x – 4)

4. Simplify : 3x – 2[x – 4(3 – x)]

5. What is the sum of the polynomials 4x2y – 6xy2 and −2xy2 + x2y?

6. Simplify : (3x + 1)(x – 8)

7. Simplify : 3a(a + 2b – 5)

8. Simplify : (2x + y)2

9. Simplify :
10. Simplify :

11. Divide : (x3 + 2x + 3) รท (x – 2)

12. The height of a rectangle is 5 cm less than twice the width, w. Write
an expression that represents

a. the perimeter of the rectangle in cm
b. the area of the rectangle in cm2

13. The radius of a circle can be represented by the expression a + 5.
Which expression represents the area of the circle?

a. π(a2 + 5)
b. π(2a + 10)
c. π(a2 + 25)
d. π(a2 + 10a + 25)

Answers:

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