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Simplifying Expressions and Collecting Like Terms

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Multiply.

I need to evaluate 2 2
(-2x) and -2x when x=3.

2
2. 2x when x=5 and when x= -5

Rewrite the division as a multiplication

-5 divide (-5 )
9 6

4. -44.1 divide (-6.3)

5. ______-17.8______________
3.2

Multiply.
6. -7(-2x - 5y + 9)

7. Factor. Check by multiplying
-6m + 24

8. -14X + 21y + 7

Collect like terms
9. 45 - 90d - 87 - 9d + 3 + 7d
10. 100t - t
11. 8x - 5x + 6 + 3y - 2y - 4

Please see the attached file for the fully formatted problems.

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algebra 2.doc

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Multiply.

I need to evaluate 2 2
(-2x) and -2x when x=3.

Solution:

Plugin x =3 in (-2x)^2, we get

(-2(3))^2 => (-6)^2 => 36

and plugin x=3 in -2x^2

-2(3)^2 => -2(9) => -18

2
2. 2x when x=5 and when x= -5

Solution:

Plugin x=5 in 2x^2, we get

2x^2 = 2(5)^2 => 2(25) = > 50

Plugin x= -5 in 2x^2, we get

2x^2 => 2 (-5^2) => 2(-25) => -50

Rewrite the division as a ...

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