In your notebook, set up the following addition using a vertical format and find the sum of the given polynomials. 3x^2 + 2x - 5 and -4 + 7x^2 -x 2 + 9x - 9 21x 2 + 2x + 20 10x 2 - 5x - 1 10x 2 + 2x - 9 answer asap

Answer #1- Add the expressions.  3x^2+2x−5+(−4+7x^2), Remove unnecessary parentheses.  3x^2+2x−5−4+7x^2, Add  3x^2 and 7x^2. 10x^2+2x−5−4, Subtract  4  from  −5. 10x^2+2x−9.

Final 10x^2  +2x−9 hopefully you now get an understanding of how to do it.

Answer #2: 7x−9

Answer #3: 4(11x+5)

Answer #4: 15x-1

Answer #5: 22x-9

-18

step-by-step explanation:

because mean value defines that total sum value over total number of set

10 miles

step-by-step explanation: