Need Algebra help plz

Algebra
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1. Find the roots of the polynomial equation. x2 + x – 72 = 0

 9 and –8

 –6 and 6

 –2 and 16

–9 and 8

2. Find the zeros of the polynomial function. f(x) = x2 – 12x + 20

2, 10

–4, –5

–2, –10

4, 5

3. Find the zeros of the polynomial function. f(x) = x2 – 4x – 60

 –10, 6

–14, 5

 –6, 10

 –5, 14

4. Find the roots of the polynomial equation. x2 + 2x – 48 = 0 

 –6, 8

–4, 12

–12, –4

–8, 6

5. Find the roots of the polynomial equation. x2 + 24 = –11x

 12, 2

3, 8

 –8, –3

 –12, –2

May 12th, 2015

Answers

1.  9 and –8

2. –2, –10

3. –10, 6

4. –6, 8

5. 3, 8


May 12th, 2015

I got 0% tf..........what happen??

May 12th, 2015

Those are the correct answers. Did the questions require you to show how you got the answers?

May 12th, 2015

no it's was a quiz..............ugh..............thx ig

May 12th, 2015

Sorry, the answers are reversed

An example of 1 worked out is.....

x2 + x – 72 = 0

x2 + 9x - 8x - 72 = 0

(x + 9) ( x - 8) = 0

x = -9

x = 8

The correct answers are:

1. -9 and 8

2. 2, 10

3. 10, -6

4. 6, -8

5. -3, -8

Just tell your teacher you got confused with the signs.


May 12th, 2015

I will answer any more questions you have for free on chat. sorry for the inconvenience.

May 12th, 2015

Question 1.1. Determine the prime factorization of 60.

  2 • 32 • 5

  22 • 3 • 5

  23 • 11

  22 • 11

Question 2.2. Which number is prime?

  14

  91

  59

  27

4. What is the GCF of 8x3y2 + 20x2y4?

  2x2y2

  4x3y4

  4x2y2

  4x3y4

Question 5.5. Factor.

x2 + 7x + 12

  (x – 3)(x – 4)

  (x + 3)(x + 4)

  (x – 12)(x – 1)

  (x – 6)(x – 2)

Question 6.6. Factor out the greatest common factor.

4x + 36x2

  4x(1 + 9x)

  4x(9x)

  4x(x + 9x)

  4x(x + 9x2)

Question 8.8. Determine if the expression is a perfect square and if it is, factor it.

a2 – 8a + 16

  (4a + 1)2

  (a + 4)(a – 4)

  (a – 4)(a – 4)

  not a perfect square

Question 9.9. Factor.

v2 – 36

  (v – 6)2

  (v2 – 6)2

  (v – 6)(v – 6)

  (v + 6)(v – 6)

11. Factor completely.

3x3 – 12x

  3x(x + 2)(x – 2)

  3(x + 2)(x – 2)

  3x(x – 4)

  3x(x – 2)(x – 2)


May 12th, 2015

1.1....2 2 3 5

2.2......57

4.... 4x3y4

5.5..(x + 3)(x + 4)

6.6.............4x(x + 9x)

8.8...  (a – 4)(a – 4)

9.9...........(v + 6)(v – 6)

11. 3x(x + 2)(x – 2)


Those are the correct answers this time i've double checked

good luck


May 12th, 2015

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