Find the sum of (x2 + x + 1) and (2x2 + 2x + 1). Enter your answer as a polynomial in descending order below, and use the caret (^) for exponents. For example, you would write 4x2 as 4x^2.​

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x