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1 year ago

Expand and simplify x(x + 2)(x + 4)

Mathematics

1 answer:

babymother [125]1 year ago

5 0

Answer:

Step-by-step explanation:

Comment

Expand the second and 3rd factors first. Then worry about the x.

Solution

x(x + 2)(x + 4)

first: x * x = x^2

Outside: 4*x = 4x

Inside: 2*x = 2x

Last: 2*4 = 8

Combine

x^2 + 4x + 2x + 8

x^2 + 6x + 8

Now is the time to worry about the extra x

x(x^2 + 6x + 8)

remove the brackets.

x*x^2 + x*6x + 8*x

Combine

Answer: x^3 + 6x^2 + 8x

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Dima020 [189]

Answer:

Step-by-step explanation:

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3 years ago

To qualify for the championship a runner must complete the race in less than 55 minutes ....... Use "t" to represent the time in

Svet_ta [14]

The inequality is t < 55

Solution:

Given that, To qualify for the championship a runner must complete the race in less than 55 minutes

Let "t" represent the time in minutes of a runner who qualifies for the championship

Here it is given that the value of t is less than 55 minutes

Therefore, "t" must be less than 55, so that the runner qualifies the championship

This is represented by inequality:

$t$

The above inequality means, that time taken to complete the race must be less than 55 for a runner to qualify

Hence the required inequality is t < 55

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3 years ago

Six times a number decreased by eight is less than five times the number

Svetlanka [38]

6n-8<5n decreased means subtract

n-8<0

n<8

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2 years ago

Mary spent a total of $354.71 for a party. She spent $200.76 on food, plus an additional $30.79 for each hour of the party. How

Rainbow [258]

Answer:

Total is 5 hours.

Step-by-step explanation:

... in the attached picture.

Hope this helps!

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1 year ago

Rewrite in simplest terms: 4 x − 5 ( x + 3 )

rusak2 [61]

Answer:

Step-by-step explanation:

4x - 5(x + 3) Remove the brackets. Watch the - sign and -5*3

4x - 5x - 15 Combine the xs

-x - 15

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2 years ago