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tangare [24]
2 years ago
14

1. Rút gọn biểu thức A(x) = (x+2)(x+3)(x+5) - (x-1)(x+4)(x+7). Từ đó tìm tất cả các giá trị x sao cho A(x) = 0.

Mathematics
2 answers:
Contact [7]2 years ago
8 0

Answer:

778744

Step-by-step explanation:

387t98878989890

zepelin [54]2 years ago
4 0

x = -29/7

Step-by-step explanation:

A(x) = (x^2 + 5x + 6)(x + 5) - (x^2 + 3x - 4)(x + 7)

= (x^3 + 10x^2 + 31x + 30) - (x^3 + 10x^2 + 17x - 28) = 14x + 58

A(x) = 0 => 14x + 58 =0 => x = -58/14 = -29/7

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What is the leading coefficient of the polynomial?
ANEK [815]

ANSWER

B) 15

EXPLANATION

The given polynomial is

23 {x}^{5}  + 12 {x}^{2}  + 19 { x }^{3}  + 15 {x}^{6}

We arrange this polynomial in ascending powers of x to obtain the standard form;

15 {x}^{6} + 23 {x}^{5}    + 19 { x }^{3} + 12 {x}^{2}

The degree of this polynomial is 6.

The coefficient of the leading term is 15

6 0
3 years ago
Which term of series1 +4+7+10+...is43
Jlenok [28]

Answer:

a = 4

d = a2 - a1

d = 7 - 4

d = 3

an = 43

an = a + (n - 1)d

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n = 42 ÷

n = 14

So, 14th term is 43

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4 0
2 years ago
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abruzzese [7]
Hello,

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4 0
2 years ago
The telephone company purchased 192 yards of wire for $2,304 in January. They
Aleks [24]

Answer:

Step-by-step explanation:

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6 0
2 years ago
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The Beechcraft 1900D is a commuter airplane with a fuel capacity of 665 gallons. The function that represents how the amount of
nalin [4]

Given:

The  function that represents how the amount of fuel changes as a function of distance flown is

f(x)=-0.9x+665

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To find:

The rate of change for this scenario.

Solution:

The slope intercept form of a linear function is

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f(x)=-0.9x+665        ...(ii)

On comparing (i) and (ii), we get

m=-0.9

Therefore, the rate of change for this scenario is -0.9. It means, the amount of fuel in the airplane is decreasing by 0.9 gallons per mile.

8 0
2 years ago
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