The sum of polynomials involves adding the polynomials
The other polynomial is 
The sum of the polynomials is given as:

One of the polynomials is given as:

Represent the other polynomial with Q.
So, we have:

Substitute the expressions for P and Sum

Make Q the subject

Evaluate like terms

Hence, the other polynomial is 
Read more about polynomials at:
brainly.com/question/1487158
Answer:
-2x² + 4x + 2
Step-by-step explanation:
(1-8x²+3x)+(1+6x²+x)
= 1 - 8x² + 3x + 1 + 6x² + x
= -2x² + 4x + 2 [-2(x² - 2 - 1)]
Answer:
There are no solutions.
Step-by-step explanation:
5x-5=5(x+1)
5x-5=5x+5
+5 +5
5x=5x+10
-5x -5x
0x=10
There are no possible answers.
Hopefully this helps.
-5.9, -4.6, -1/4, 1/2, 1.75, 2, 18, 21.