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anonymous

  • one year ago

evaluate the expression for the given value of the variable

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  1. anonymous
    • one year ago
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    \[\left| -4b-8 \right|+\left| \left| -1-b ^{2} \right| \right|+2b ^{3} \]

  2. anonymous
    • one year ago
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    b=-2

  3. SolomonZelman
    • one year ago
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    \(\large\color{black}{ \displaystyle \left| -4b-8 \right|+\left| -1-b ^{2} \right|+2b ^{3} }\) you mean like this?

  4. SolomonZelman
    • one year ago
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    without dobule bars.

  5. SolomonZelman
    • one year ago
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    double* bars

  6. anonymous
    • one year ago
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    yes

  7. SolomonZelman
    • one year ago
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    Then plug in -2 for b. \(\large\color{black}{ \displaystyle \left| -4(-2)-8 \right|+\left| -1-(-2) ^{2} \right|+2(-2) ^{3} }\)

  8. anonymous
    • one year ago
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    my final answer is 13

  9. SolomonZelman
    • one year ago
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    I think that is incorrect.

  10. SolomonZelman
    • one year ago
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    \(\large\color{black}{ \displaystyle \left| -4(-2)-8 \right|+\left| -1-(-2) ^{2} \right|+2(-2) ^{3} }\) \(\large\color{black}{ \displaystyle \left| 8-8 \right|+\left| -1-(-2) ^{2} \right|+2(-2) ^{3} }\) \(\large\color{black}{ \displaystyle \left| 0 \right|+\left| -1-(-2) ^{2} \right|+2(-2) ^{3} }\) \(\large\color{black}{ \displaystyle \left| -1-(-2) ^{2} \right|+2(-2) ^{3} }\)

  11. SolomonZelman
    • one year ago
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    \(\large\color{black}{ \displaystyle \left| -1-(-2) ^{2} \right|+2(-2) ^{3} }\) \(\large\color{black}{ \displaystyle \left| -1-4 \right|+2(-2) ^{3} }\) \(\large\color{black}{ \displaystyle \left| -5 \right|+2(-2) ^{3} }\) \(\large\color{black}{ \displaystyle 5+2(-2) ^{3} }\) \(\large\color{black}{ \displaystyle 5+2(-8) }\)

  12. SolomonZelman
    • one year ago
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    and on...

  13. SolomonZelman
    • one year ago
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    and you then get a negative number, that I will give you.

  14. anonymous
    • one year ago
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    @SolomonZelman would you add 5 and 2 and then multiply 7 by -8

  15. anonymous
    • one year ago
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    @SolomonZelman and the answer would be -56?

  16. SolomonZelman
    • one year ago
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    You first multiply.

  17. SolomonZelman
    • one year ago
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    So it is `(-2)•8` And only then, you add 5

  18. anonymous
    • one year ago
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    -11?

  19. SolomonZelman
    • one year ago
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    Yes

  20. anonymous
    • one year ago
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    thank you

  21. SolomonZelman
    • one year ago
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    good job

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