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3 years ago

Factor 2x 2 - 10x + 8 completely.

Mathematics

1 answer:

murzikaleks [220]3 years ago

6 0

Answer:

2(x-1)(x-4)

Step-by-step explanation:

Begin by dividing each term by 2 and pulling the 2 to the front.

$2x^2-10x+8 = 2(x^2-5x+4)$

This is a trinomial. Trinomials are three term algebraic expressions typically featuring variables to exponent powers. To break these trinomials down we factor them using the diamond method or GCF. The diamond method states that for a trinomial $ax^2+bx+c$ multiply a*c then find two numbers which multiply to this number and add to b. When you find those numbers, write them as $(x-/+ number)(x-/+number)$ .

$x^2-5x+4$

a=1, c=4

ac=4 and add to b=-5 which -1 and -4 satisfy

The factored form is 2(x-1)(x-4).

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Find the domain for the rational function f of x equals quantity x plus 1 end quantity divided by quantity x minus 2 end quantit

larisa86 [58]

Answer:

(−∞, 2)∪(2, ∞)

Step-by-step explanation:

Domain is all the values that "x" can be

since finding all the values which "x" can be is too hard we will find out the values which "x" can't be- this means equating the denominator to "0" so that the function will be undetermined:

$f(x)=\frac{x+1}{x-2}$

since we need the denominator to be "0" we must use the opposite of (-2) which is "2" so we will substitute "2" in the place of "x" $f(2)=\frac{2+1}{2-2}$ - the function is now "undetermined" since nothing can be divided by 0 we need to write our answer in proper domain/range format

-Hope this helps!

8 0

3 years ago

Read 2 more answers

What kind of angle is 47 degrees

Wittaler [7]

The angle is and acute angle.
Acute: Anything under 90 Degrees
Right: 90 Degrees
Obtuse: Anything Above 90 Degrees

6 0

4 years ago

Which of the following represent the same level of precision? Check all that apply.

aniked [119]

Precision refers to the degree of significant figures, or basically how many numbers after the decimal. It is the number of digits in a number.
 5.9 liters and 13.6 liters have the same precision (one number after the decimal).
90 liters and 94 liters have the same precision (no decimals).

Correct answer: A and B, C and D

7 0

4 years ago

Read 2 more answers

Please help Bsbsn’s x

kaheart [24]

Answer:

B. a ⊥ d

Step-by-step explanation:

If lines "a" and "d" are in the same plane, they are perpendicular to each other. If not, there is no relationship between the lines.

Lines parallel to the same line are parallel to each other, so a║c. In the same plane, a line perpendicular to one of two parallel lines is also perpendicular to the other. (For example, one side of a rectangle is perpendicular to both of the adjacent sides, which are parallel to each other.)

The appropriate choice is ...

a ⊥ d

In 3 dimensions, ...

Consider a cube. A given edge will be perpendicular to both of the two edges it meets at a corner.

It will not intersect (has no "perpendicular" relationship to) either of the edges parallel to those that meet at the corner at the other end of the space diagonal.

5 0

4 years ago

the function f(x)=4 (2)^x represents the number of people who share a cat video x hours after it first appears on a wedsite. how

Gennadij [26K]

Answer:

$\boxed{\text{It doubles}}$

Step-by-step explanation:

$f(x)=4(2)^{x}$

Let's create a table of the values.

$\begin{array}{lr}\mathbf{x} & \mathbf{f(x)} \\0 & 4 \\1 & 8 \\2 & 16 \\3 & 32 \\4 & 64 \\5 & 128 \\\end{array}\\\text{The number of people sharing the video $\boxed{\textbf{doubles}}$ every hour}$

4 0

3 years ago