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anonymous

  • 4 years ago

Essay question: show all work. Find the difference: (-5x^2+2x-5)-(7x^2-2x-3)

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  1. anonymous
    • 4 years ago
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    for the second half of the question you need to distribute the negative sign. so it becomes: (-7x^2+2x+3) so the full equation now is (-5x^2+2x-5)-(-7x^2+2x-3) Then you subtract life terms. So it is: -5x^2-(-7x^2)=2x^2 then: 2x+2x=4x then: -5-(-3)=2 so it would come out to: 2x^2+4x-2

  2. anonymous
    • 4 years ago
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    ok so what about the first half

  3. anonymous
    • 4 years ago
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    of the equation?

  4. anonymous
    • 4 years ago
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    yes does it stay the same

  5. anonymous
    • 4 years ago
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    yes. the negative sign only affects the second half of the equation.

  6. anonymous
    • 4 years ago
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    oh ok

  7. anonymous
    • 4 years ago
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    so it thats the whole problem or is more needed to be done

  8. anonymous
    • 4 years ago
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    BUT you only distribute the negative sign when its a subtraction problem, not addition. and yes. the answer at the bottom is the full answer.

  9. anonymous
    • 4 years ago
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    ok so if it is addition you leave it as it is

  10. anonymous
    • 4 years ago
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    yesss. i did the equation horizontally, but it might be easier to do it vertically. look at the problem like this\[-5x^2+2x-5\over7x^2-2x-3\] think of the line in the middle as the line that tells you to subtract. since all the like terms are lined up it makes it easier.

  11. anonymous
    • 4 years ago
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    oh ok

  12. anonymous
    • 4 years ago
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    make more sense?

  13. anonymous
    • 4 years ago
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    yes thanks

  14. anonymous
    • 4 years ago
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    Now i have a question about another problem

  15. anonymous
    • 4 years ago
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    ok shoot

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