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2 years ago

Consider each expression. Is the value of the expression negative?

Mathematics

1 answer:

tatyana61 [14]2 years ago

7 0

Answer:

Yes

Step-by-step explanation:

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Find an upper limit for the zeroes 2x^4 -7x^3 + 4x^2 + 7x - 6 = 0

erik [133]

<u>Answer-</u>

2 is the upper limit for the zeros.

<u>Solution-</u>

The given function f(x) is,

$2x^4 -7x^3 + 4x^2 + 7x - 6 = 0$

For calculating the zeros,

$\Rightarrow f(x)=0$

$\Rightarrow 2x^4 -7x^3 + 4x^2 + 7x - 6 = 0$

$\Rightarrow 2x^4-4x^3-3x^3+6x^2-2x^2+ 4x+3x-6=0$

$\Rightarrow 2x^3(x-2)-3x^2(x-2)-2x(x-2)+3(x-2)=0$

$\Rightarrow (x-2)(2x^3-3x^2-2x+3)=0$

$\Rightarrow (x-2)(x^2(2x-3)-1(2x-3))=0$

$\Rightarrow (x-2)(x^2-1)(2x-3)=0$

$\Rightarrow (x-2)(x+1)(x-1)(2x-3)=0$

$\Rightarrow x-2=0,\ x+1=0,\ x-1=0,\ 2x-3=0$

$\Rightarrow x=2,\ x=-1,\ x=1,\ x=\frac{3}{2}$

From all the 4 roots, it can be obtained that 2 is the greatest zero.

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2 years ago

Which of the following best describes the algebraic expression x/3 -15

Dennis_Churaev [7]

Answer:

A. A number divided by three minus fifteen.

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2 years ago

Pls I need your helppppp

alexandr402 [8]

Answer:

3 6 9

8 16. 24

Step-by-step explanation:

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2 years ago

Read 2 more answers

Factor completely, 9x4 -225y8

Furkat [3]

Step-by-step explanation:

$9x4 -225y8 \\ = 3 \times 3 \times x \times 2 \times 2 -3 \times 5 \times 3 \times 5 \times y \times 2 \times 2 \times 2$

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2 years ago

Yasuaki mows lawns for $6.75 an hour. If he spends 7 hours

polet [3.4K]

Answer:

none

Step-by-step explanation:

He is going to get double the amount becausehe is doing this over the weekend

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2 years ago