Math

posted by Lucy

Please help me with this step by step show your work problem.

|-4b-8|+|-1-b^2|+2b^3 (b= -2)

My work
|-4b-8|+|-1-b^2|+2b^3
|-4(-2)-8|+|-1-(-2^2)|+2(-2^3)
|8-8|+|-1-4|-16
8+8+5-16
16+5-16
5

Could you check my work? If it is incorrect, could you show me the steps to correct it?

  1. John

    You are okay until the 8+8 step

    8-8 = 0

    5 - 16 =-11

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