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PIT_PIT [208]
2 years ago
6

What is a cubic polynomial function with zeros 3,3 and -3? show your work.​

Mathematics
1 answer:
Brums [2.3K]2 years ago
4 0

Answer:

Cubic polynomial function with zeros 3,3 and -3 is \mathbf{x^3-3x^2-9x+27=0}

Step-by-step explanation:

We need to find a cubic polynomial function with zeros 3,3 and -3.

If zeros of polynomial are: 3,3,and -3

we can write:

x=3, x=3, x=-3

Or

We can write:

x-3=0, x-3=0, x+3=0

Now, we can write them as:

(x-3)(x-3)(x+3)=0

Multiplying the terms, we can find the polynomial:

(x-3)(x-3)(x+3)=0\\(x(x-3)-3(x-3))(x+3)=0\\(x^2-3x-3x+9)(x+3)=0\\(x^2-6x+9)(x+3)=0\\x(x^2-6x+9)+3(x^2-6x+9)=0\\x^3-6x^2+9x+3x^2-18x+27=0\\x^3-6x^2+3x^2+9x-18x+27=0\\x^3-3x^2-9x+27=0

So, cubic polynomial function with zeros 3,3 and -3 is \mathbf{x^3-3x^2-9x+27=0}

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Simplify the sum. (7u^3 + 8u^2 + 7) + (8u^3 – 3u + 7)
Maslowich

Answer:

15u^3 + 8u^2 - 6u + 13  

Step-by-step explanation:

(7u^3 + 8u^2 + 8) + (8u^3 - 6u + 5)  

= 7u^3 + 8u^2 + 8 + 8u^3 - 6u + 5  

= 7u^3 + 8u^3 + 8u^2 - 6u + 5 + 8  

*Now add the like terms  

= 15u^3 + 8u^2 - 6u + 13  

And that is all your can do!

6 0
3 years ago
Read 2 more answers
Simplify square roots<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B125%7D%20" id="TexFormula1" title=" \sqrt{125} " alt=" \
9966 [12]
The square root of 125 is 15
5 0
3 years ago
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Scarface is one of the best movies here's my drawing but it's unfinished​
saul85 [17]

Answer:

nice work hope to see it once its finished!

Step-by-step explanation:

3 0
2 years ago
Elise is a project manager
gregori [183]

Answer:

£11.85

Step-by-step explanation:

In the question, we are told that:

In 2016 she earned a monthly salary of £2,100

In 2017 she had a 3% raise

This means 3% of £2,100

3/100×£2,100 = £63

This means her salary for 2017 =

£63 + £2,100 =£2,163

Step 2

We are told in the question that she worked 42 hours per week for 45 weeks in 2017

Since her monthly pay for 2017 = £2,163

She worked 42 hours per week

There are 7 days in one week

The number of hours she worked per day = 42 hours ÷ 7 = 6 hours per day

4.345 weeks= 1 month

The number of hours she worked per month = 42 hours × 4.345 weeks

= 182.49 hours.

We can say that for 182.49 hours she was paid = £2,163

Her average pay per hour is calculated as:

If 182.49 hours = £2,163

1 hour = represented by Y

Cross multiply

182.49Y = £2,163

Y = £2,163 ÷ 182.49

Y = £11.852704258

Approximately = £11.85

Therefore, Elise Average pay per hour for the year = £11.85

8 0
3 years ago
Read 2 more answers
Which expression is equivalent to -7(y - 2)
Neko [114]

The expression equivalent to -7(y - 2) is -7y + 14

<h3>Which expression is equivalent to -7(y - 2)?</h3>

Given the expression; -7(y - 2)

We expand the expression by multiplying each element inside the parentheses the element out i.e -7

-7(y - 2)

[ -7 × y and -7 × -2 ]

-7y + 14

Therefore, the expression equivalent to -7(y - 2) is -7y + 14.

Learn more about expressions here: brainly.com/question/13947055

#SPJ1

5 0
1 year ago
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