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Mrrafil [7]
4 years ago
13

Can someone please help me with this

Mathematics
1 answer:
djverab [1.8K]4 years ago
6 0

student b is correct

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Simplify this equation, 12x+7x+8y+12^2+y+12=
soldi70 [24.7K]
12x+7x+8y+12^2+y+12=19x+9y+24^2
5 0
3 years ago
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What is the justification for the first step in proving the formula for factoring the sum of cubes?
Anna11 [10]

Explanation:

The formula isnt correctly written, it should state:

a^3+b^3 = (a+b)(a^2-ab+b^2)

You have to start from (a+b)(a^2-ab+b^2)  and end in a³+b³. On your first step, you need to use the distributive property.

(a+b)(a^2-ab+b^2) = a*(a^2-ab+b^2) + b*(a^2-ab+b^2)

This is equal to

a*a^2-a*(ab) + a*b^2 + b*a^2-b*(ab) + b*b^2 = a^3 - a^2b + ab^2 +ba^2 -b^2a +b^3

Note that the second term, -a²b, is cancelled by the fourth term, ba², and the third term, ab², is cancelled by the fifht term, -b²a. Therefore, the final result is a³+b³, as we wanted to.

5 0
4 years ago
P(x)-x^4-3x^2+kx where k is an unknown integer.
timurjin [86]

Answer:4

Step-by-step explanation:

P(2)

(2)

4

−3(2)

2

+k(2)−2

16−3⋅4+2k−2

2+2k

2k

k

​

=10

=10

=10

=10

=8

=4

​

5 0
3 years ago
please solve this question
____ [38]
A, c, and e are the correct answers
3 0
3 years ago
Read 2 more answers
Help on number six seven eight nine 10 11 12 13 14 15
shepuryov [24]
Easiest ways to solve them are to take the denominator and numerator and and divide the one you are asked to use to answer and divide and see if it works on both. 
  Example: first     105 / 15 = 7 )  Then: 105 / 7 = 15
                             119              )             119 / 7 = 17

Hope I helped. :D

8 0
3 years ago
Read 2 more answers
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