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Phoenix [80]
4 years ago
14

What is the factored form of this expression?

Mathematics
1 answer:
gayaneshka [121]4 years ago
7 0

Answer:

(x +  11 ) * ( x - 11)

Step-by-step explanation:

The expression:

x²   -    121

is a difference of squares

We notice that     √x²    =  x       and    √121    =   11

Then

( x²  -  121  )  =   ( x + 11 ) *  ( x  -  11 )

If we multiply

( x  +  11 ) *  ( x  -  11 )   =    x*x  - 11*x  +  11*x  - (11)*(11)

( x  +  11 ) *  ( x  -  11 )   =  x²  - 121

That is what we want to probe

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Answer:

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Step-by-step explanation:

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3 years ago
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frez [133]
It Takes Nancy 10 Hours.
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4 years ago
Michael ran 655 feet in 19 seconds jasmine ran 1 mile in 4 minutes and 24 seconds in miles per hour and to the nearest tenth how
Natalka [10]

Answer:

<h2>25 mph</h2>

Step-by-step explanation:

<h3>Step 1: Convert miles to feet</h3>

First, we need to convert the miles to feet keeping in mind that:

1 mile = 5,280 feet

655 ft 19 sec

5,280 ft 4 min 24 sec

<h3>Step 2: Divide the distance by the time to find the unit rate</h3>

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1,245 feet per minute

<h3>Step 3: Convert minutes to hours</h3>

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<h3>Step 4: Convert feet to miles</h3>

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To find how much faster Michael ran, we need one more step.

<h3>Step 5: Subtract smaller amount from larger amount</h3>

39.17 - 14.15 = 25

I'm always happy to help :)

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3 years ago
What is the solution of the equation x2 - 4x + 1 = 0?
grin007 [14]

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Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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3 years ago
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