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4 years ago

Solve using perfect square factoring patterns.

Mathematics

1 answer:

denis-greek [22]4 years ago

7 0

Y^2 + 18y + 81 = 0
(y + 9)^2 = 0

y + 9 = 0

y = -9

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Find the rational zeros of the polynomial function, f(x)= 4x^3-8x^2-19x-7

Dima020 [189]

Answer:

The rational zero of the polynomial are $\pm \frac{7}{4}, \pm \frac{1}{4},\pm \frac{7}{2},\pm \frac{1}{2},\pm 7,\pm 1$ .

Step-by-step explanation:

Given polynomial as :

f(x) = 4 x³ - 8 x² - 19 x - 7

Now the ration zero can be find as

$\dfrac{\textrm factor of P}{\textrm factor Q}$ ,

where P is the constant term

And Q is the coefficient of the highest polynomial

So, From given polynomial , P = -7 , Q = 4

Now , $\dfrac{\textrm factor of \pm P}{\textrm factor of \pm Q}$

I.e $\dfrac{\textrm factor of \pm P}{\textrm factor of \pm Q}$ = $\frac{\pm 7 , \pm 1}{\pm 4 ,\pm 2,\pm 1 }$

Or, The rational zero are $\pm \frac{7}{4}, \pm \frac{1}{4},\pm \frac{7}{2},\pm \frac{1}{2},\pm 7,\pm 1$

Hence The rational zero of the polynomial are $\pm \frac{7}{4}, \pm \frac{1}{4},\pm \frac{7}{2},\pm \frac{1}{2},\pm 7,\pm 1$ . Answer

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4 years ago

At Huge University, a sample of 200 business school seniors showed that 26 planned to pursue an MBA degree, compared with 120 of

zysi [14]

Not quite sure sorry edit : Oh sorry I supposed to add this in the comment section

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3 years ago

What is the sum of 12 – 5i and –3 + 4i?

8090 [49]

12 - 3 =9 and -5i+4i=1i or i so it is {9-i}

6 0

3 years ago

Read 2 more answers

A number k increased by 7 =34

grin007 [14]

Let's set up this problem.
k+7=34
Subtract k from both sides.
k=27

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3 years ago

Read 2 more answers

Question 2 Multiple Choice Worth 1 points)

timama [110]

Answer:

Step-by-step explanation:

y = 4x+2

slope of the line is 4

slope of any parallel to the line is also 4

point-slope equation for line of slope 4 that passes through (8,4):

y-4 = 4(x-8)

rearrange to slope-intercept form:

y = 4x - 28

6 0

3 years ago