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CaHeK987 [17]
2 years ago
8

a) { - (b)}^{2} " align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
Cloud [144]2 years ago
7 0

Answer:

 a - b2

Step-by-step explanation:

STEP  1 :

Trying to factor as a Difference of Squares:

1.1      Factoring:  a-b2  

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

        A2 - AB + BA - B2 =

        A2 - AB + AB - B2 =

        A2 - B2

Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check :  a1   is not a square !!

Ruling : Binomial can not be factored as the difference of two perfect squares

Final result :

 a - b2

<u><em>HOPE THIS HELPS!</em></u>

<u><em>PLEASE MARK BRAINLIEST! :)</em></u>

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3 years ago
What is the sum of the geometric sequence 3,12,48... if there are 8 terms?
s344n2d4d5 [400]

Answer:

  C)  65,535

Step-by-step explanation:

You can add up the 8 terms ...

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to find their sum is 65535.

_____

<em>Estimating</em>

Knowing the last term (49152) allows you to make the correct choice, since the sum will be more than that and less than double that.

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<em>Using the formula</em>

You know the formula for the sum of a geometric sequence is ...

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6 0
3 years ago
Does anyone know the answer?
grigory [225]

Answer:

12.7

Step-by-step explanation:

12.7  

Basically u are gonna wanna use pythagoras first

BC = √(12^2 - 6^2) = √(144 - 36) = √(108) = 10.39230485  

Also the Side Angle Side rule comes into play use the following

BC/sin(55) = CD/sin(90) <----- angle

BC/sin(55) = CD/sin(90) 

sin(90)BC/sin(55) = CD 

1*BC/sin(55) = CD 

BC/sin(55) = CD 

10.39230485/0.819152044 = CD 

12.68666167 = CD 

12.7 = CD

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3 years ago
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