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WORTH 50 POINTS!

can you please help me with 12 and 15?
(SHOW WORK IF POSSIBLE!)
PLEASE AND THANK YOUU!!!​

WORTH 50 POINTS! can you please help me with 12 and 15? (SHOW WORK IF POSSIBLE!) PLEASE-example-1
User David Roe
by
9.1k points

1 Answer

7 votes

Answer:

Hi, I know number 15 but can't twist my finger around 12 sorry.

Explanation:

Anyways. The expression
8a^2-4b+7a^2 and
5\left(3a^2-2b\right) are in fact not equivalent.

Show your work:

The expression
8a^2-4b+7a^2 is worked out like this:


8a^2-4b+7a^2


=8a^2+ -4b+7a^2

Combine Like Terms:


8a^2-4b+7a^2

=
(8a^(2) + 7a^(2)) + (-4b)


15a^(2) + -4b

Answer:


15a^(2) + -4b

While the expression
5\left(3a^2-2b\right) is worked out like this:


5\left(3a^2-2b\right)


=(5)(3a^(2) + -2b)


=(5)(3a^(2) )+(5) (-2b)

Answer:


15a^(2) - 10b

So the expressions are not equivalent.

Hope this helped!

User Sphvn
by
8.4k points

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