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December 11, 2016

Homework Help: Math: Check answers

Posted by Deborah on Tuesday, January 29, 2013 at 11:03am.

1. How can this product be simplified?
5x2(2x – 3)


5x2 + 2x – 3

10x3 – 15x2

–5x2

7x3 – 15x2

2. What is the GCF of the terms of 8c3 + 12c2 + 10c ?

2

4

2c

4c

3. How can the polynomial 6d4 + 9d3 – 12d2 be factored?

3d2(2d2 + 3d – 4)

3d2(3d2 + 6d – 9)

3d(d3 + 3d2 – 4)

6d2(d2 + 3d3 – 6)

4. There is a circular garden in the middle of a square yard. The radius of the circle is 4x. The side length of the yard is 20x. What is the area of the part of the yard that is not covered by the circle?

4x(5)

8x2(5 – )

16x(25 + )

16x2(25 – )

5. What is the simplified form of –3z2(z + 2) – 4(z2 + 1)?

–7x2 + 1

–3z3 – 4z2 – 6z – 4

–3z3 – 2z2 – 4

–3z3 – 10z2 – 4

Answers:

1.)B
2.)C
3.)A
4.)D
5.)D

Thank You

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