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3 years ago

Which of the following expressions is equal to 2x^(2)+8?

Mathematics

1 answer:

Rina8888 [55]3 years ago

4 0

Answer:

The expression equal to 2x^(2)+8 is:

First option (2x-4i)(x+2i)

Step-by-step explanation:

If we multiply

(2x-4i)(x+2i)=(2x)(x)+(2x)(2i)-(4i)(x)-4i(2i)

(2x-4i)(x+2i)=2x^(1+1)+4xi-4xi-8i^(1+1)

Simplifying:

(2x-4i)(x+2i)=2x^2-8i^2

and i^2=-1, then:

(2x-4i)(x+2i)=2x^2-8(-1)

Multiplying:

(2x-4i)(x+2i)=2x^2+8

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3 years ago

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4 years ago

Suppose you want to have $400,000 for retirement in 35years. Your account earns 4% interest.

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$\begin{equation*} \$437.76 \end{equation*}$

1) This is a question for Annuity usage. Note that we'll need the following formula below:

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Note that P is the value you'll need to deposit each month so that in 35 years you'll have $400,000 for your retirement.

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1 year ago

Write the algebraic expression (ex. 2x - 5) for this problem:<br>The quotient of a number and 8

matrenka [14]

Answer:

x/8

Step-by-step explanation:

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3 years ago

What type of equation is y = |x+2|?

Colt1911 [192]

Answer:

x = -2

Step-by-step explanation:

0 = |x + 2|

|x + 2| = 0

x + 2 = 0

x = -2

Answer:

x = -2

Hope this helped.

Brainliest is appreciated.

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3 years ago