Find the sum of these polynomials (x^2+x+9)+(7x^2+5)

The correct option is A

Step-by-step explanation:

(x^2+x+9)+(7x^2+5)

Open the parenthesis:

=x²+x+9+7x²+5

Now add the like terms:

=8x²+x+14

Therefore the correct option is A...

inch

step-by-step explanation:

yard and mile are too big.

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)