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djverab [1.8K]
3 years ago
15

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. What is the resulting expression?

Mathematics
2 answers:
siniylev [52]3 years ago
7 0

Factoring the polynomial 4x^4-20x^2-3x^2 + 15 by grouping means separation of the polynomial in two addends, each of them consists of two addends:

4x^4-20x^2-3x^2 + 15=(4x^4-20x^2)+(-3x^2+15).

In first brackets the common factor is 4x^2, in second brackets the common factor is -3.

Then

(4x^4-20x^2)+(-3x^2+15)=4x^2(x^2-5)-3(x^2-5)=(x^2-5)(4x^2-3).

Answer: correct choice is B

Serjik [45]3 years ago
4 0

Answer:

B is correct

Step-by-step explanation:

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Convert 12,5% to a decimal fraction.
Stolb23 [73]
Decimal fractions don't exist. Do you mean convert to a decimal and a fraction?
5 0
3 years ago
Can anyone help me with 24,27,30 and 33 please
mamaluj [8]
24) 9/19

27 is a bit tricky for me.. sorry ):

30) On the 7th it will be 1/120
33) C
7 0
3 years ago
7. A person has $10,100 to invest in two different stock. Stock ABC costs $32 per share and pays dividends of $1.20 per share. S
Vesna [10]

Answer:

invested in ABC = $3200

Step-by-step explanation:

given data

total invest = $10,100

Stock ABC costs = $32 per share

dividends = $1.20 per share

Stock XYZ costs = $23 per share

dividends = $1.40 per share

earn a total dividends = $540

solution

we can say total money invest express as

total money invested = 32 × P + 23 × Q

here person buys stocks of ABC is P and buys stocks of stocks of XYZ is Q

$10,100 = 32 × P + 23 × Q  

we can also write this as by multiply 3 both side

$30,300 = 96 × P + 69 × Q  ......................1

and total dividends will be

total dividends =  1.2 × P +1.4 × Q

$540 =  1.2 × P +1.4 × Q

we can also write this as by multiply 80 both side

$43200 = 96 × P + 112 × Q  ....................2

so from equation 1 and 2 , subtracting 1 from 2

we get

Q = 300

and P = 100

so that we invest 100 × 32

invested in ABC = $3200

6 0
3 years ago
PLEASE HELP FAST!! WILL GIVE BRAINLIEST TO FIRST ANSWER!​
oee [108]

Answer:

3 okie

Step-by-step explanation:

8 0
2 years ago
What are the factors of the expression x^2+x-20?
tatyana61 [14]

Answer:

(x-4)(x+5)

Step-by-step explanation:

Find 2 numbers knowing sum (1) and product (-20). To find them, factor pairs of (-20) --> (-2,10) (-4,5). This sum is 1=b. Then, these 2 numbers are: - 4 and 5. Y=(x-4) (x+5). Hope this helped :)

3 0
3 years ago
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