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March 26, 2017

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Subtract..
(8x^4+5x^3-6)-(2x^2-2x+6)

I got 8x^4+5x-2x^2+2x-12

convert the number to scientific notation.
19,450,000,000

I got 1.945x10^10

  • Math correct - ,

    your first answer is right except the second term which should be 5x^3.

    And writing in scientific notation, when moving decimal to left, exponent is negative, so correct answer will be 1.945*10^-10

  • Math correct - ,

    I am sorry, your scientific notation is correct. When moving decimal to left exponent is positive.

  • Math correct - ,

    1.945x10^10
    or
    1.945*10^-10

  • Math correct - ,

    1.945*10^-10
    or
    1.945x10^10

  • Math correct - ,

    1.945*10^-10
    or
    1.945x10^10

    and 8x^4+5x^3-2x^2+2x-12
    is this correct?

  • Math correct - ,

    yes.

  • Math correct - ,

    1.945*10^10 and yes your polynomial is correct.

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