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vshiroky

  • one year ago

The value of 3(x+2)^2 when x =-4 I can't remember the order

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  1. anonymous
    • one year ago
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    remember, PEMDAS P Parentheses first E Exponents (ie Powers and Square Roots, etc.) MD Multiplication and Division (left-to-right) AS Addition and Subtraction (left-to-right)

  2. vshiroky
    • one year ago
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    Do I foil it?

  3. anonymous
    • one year ago
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    Well you already have what x is, so you would just plug x in. If you were expanding, then yes, you foil it.

  4. vshiroky
    • one year ago
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    I got 36 but I think it's wrong

  5. anonymous
    • one year ago
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    so since x = -4 \[3(-4+2)^2\]

  6. anonymous
    • one year ago
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    sorry, \[3(-2)^2\]

  7. anonymous
    • one year ago
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    \[3(-2)^2 = 3(4)\]

  8. anonymous
    • one year ago
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    \[3\times4\]

  9. anonymous
    • one year ago
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    and that equals 12

  10. vshiroky
    • one year ago
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    Thank you can you double check another answer for me

  11. vshiroky
    • one year ago
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    9y^2-4x X=-4 and y=1

  12. UsukiDoll
    • one year ago
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    \[9y^2-4x\]

  13. UsukiDoll
    • one year ago
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    and we have y =1, and x = -4 right?

  14. vshiroky
    • one year ago
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    I got 25

  15. UsukiDoll
    • one year ago
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    so we plug in 1 and -4 into the equation \[9(1)^2-4(-4)\]

  16. UsukiDoll
    • one year ago
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    \[9(1)-(-16) \rightarrow 9+16=25\]

  17. UsukiDoll
    • one year ago
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    I also got 25, so it seems to be the right answer.

  18. vshiroky
    • one year ago
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    Ty!

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