(3x2 + x + 1) - (2x2 -3x- 5) =

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

the square root of what number? if you add that, then someone will probably answer the question.

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3