algebra

posted by .

add the following
(-8x^2-2x+4)+(x^2-9x+7)

  • algebra -

    (-8x^2-2x+4)+(x^2-9x+7)=
    -8x^2+x^2 -2.4x+(-9x) +4+7=
    -7x^2 -2.4x-9x +11=

    -7x^2 -11.4x +11

  • algebra -

    (-8x^2-2x+4)+(x^2-9x+7)
    to add, we just combine the numerical coefficients (or the numbers before the variable) of the same variables (meaning same letters and same exponents).
    thus,
    (-8x^2 - 2x + 4 ) + ( x^2 - 9x + 7 )
    -7x^2 - 11x + 11

    hope this helps~ :)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    Which of the following would eliminate the variable on the left side of the given equation?
  2. math

    Which of the following would eliminate the variable on the left side of the given equation?
  3. math

    Which of the following would eliminate the variable on the left side of the given equation?
  4. Math

    Which of the following would eliminate the variable on the left side of the given equation?
  5. Chemistry

    Sorry, I didn't finish the question: Which of the following will increase the molar sollubility of Ag2CO3?
  6. algebra

    add the following (8.1x^2-5.9x-7.1)+-9.8x^2-8.1x-4.8)
  7. algebra

    add tyhe following (-8x^2-2x+4)+(x^2-9x+7)
  8. statistics

    Use summation notation to express each of the following calculations: a. Add 1 point to each score, then add the resulting values. b. Add 1 point to each score and square the result, then add the squared values. c. Add the scores and …
  9. statistics

    Use summation notation to express each of the following calculations: a. Add 1 point to each score, then add the resulting values. b. Add 1 point to each score and square the result, then add the squared values. c. Add the scores and …
  10. algebra

    Short Answer. Add the following polynomials. (4x^2-3x+2)+(5x^3-7x^2-9)

More Similar Questions