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3 years ago

Need help on 2,3,4 please help me please

Mathematics

1 answer:

AURORKA [14]3 years ago

6 0

Answer:

Step-by-step explanation:

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Factor the polynomial: – x3 - 4x2 - 5x

Alinara [238K]

Answer:

$-x3-4x2-5x=-x(x^2+4x+5)$

Step-by-step explanation:

we are given the polynomial as

$-x3-4x2-5x$

here we can see that the GCF of $-x^3$ , $-4x^2$ and $-5x$ is

$-x$

Hence we take it outside the bracket

$-x(x^2+4x+5)$

The polynomial within the bracket $x^2+4x+5$ can not be factorized further , hence this would be our final answer.

3 0

3 years ago

Please help me with this math!

wel

Answer:

Please check the explanation.

Step-by-step explanation:

Given the polynomial function

$f\left(x\right)\:=x^3+2x^2-16x-32$

Let us determine the factors by solving

$\:\left0\right\:=x^3+2x^2-16x-32\:$

$\left(x+2\right)\left(x+4\right)\left(x-4\right)=0$

Using the zero factor principle:

if $ab=0\:\mathrm{then}\:a=0\:\mathrm{or}\:b=0\:\left(\mathrm{or\:both}\:a=0\:\mathrm{and}\:b=0\right)$

$x+2=0\quad \mathrm{or}\quad \:x+4=0\quad \mathrm{or}\quad \:x-4=0$

Thus, (x+2) (x+4) and (x-4) are the factors of the polynomial function.

Therefore,

YES

(x+2)

(x+4)

(x-4)

And (x-2) (x+6) are not the factors of the polynomial function.

Therefore,

YES

(x-2)
(x+6)

3 0

3 years ago

The regular price of a DVD is $26 the week after the DVD is on sale for $19.50 how many times the regular price is the sale of t

scoray [572]

Regular price= x times of sale price
26=x times 19.50
divide both sides by 19.50
1.33333333333333333=x

so it is 1.33333 times the sale price or 4/3

4 0

3 years ago

The patel family went to a festival. the family is made up of 2 adults and 3 children. admission to the festival is $22.00 for a

MArishka [77]

Answer:$89.00

Step-by-step explanation:22 times 2 is 44.

15 times 3 is 45.

44 plus 45 is 89

3 0

2 years ago

Read 2 more answers

A helicopter blade spins 775 times in 3 minutes. find the rate of the revolutions per second.

Stolb23 [73]

Use the proportions property:

775 times ---------- 180 sec
x ---------- 1 sec

$x=\frac{775}{180}=4.3 \ times \ per \ sec$

3 0

3 years ago