Addition and Subtraction of Polynomials Answers

Find each sum.(3n2 – 5n + 6) + (–8n2 – 3n – 2) =

(–4c2 + 7cd + 8d) + (–3d + 8c2 + 4cd) = c2 + ⇒ 11 cd + ⇒ 5 d

Find each difference.(–6s2 + 12s – 8) – (3s2 + 8s – 6) =

(5a2 + 4ab – 3b2) – (–5ab + 4b2 + 3a2) = a2 + ⇒ 9 ab + ( ⇒ -7 b2)

(0.4k3 – 2.5k) – (2.4k3 + 3k2 – 1.2k) =

Which example illustrates the commutative property of addition for polynomials?

Which example illustrates the associative property of addition for polynomials?

Which expression represents the length, in inches, of the framed picture?

What is the perimeter of the framed picture in terms of x? ( x + ) inches

Which expression represents the width of the framed picture?

The polynomial –16t2 + vt + h0 models the height, in feet, of a ball t seconds after it is thrown. In this polynomial, v represents the initial vertical velocity of the ball and h0 represents the initial height of the ball.Min throws a baseball from a height of 6 feet with an initial vertical velocity of 30 feet per second. Which polynomial models the height of the ball, in feet?

At the same time, Min’s little brother throws a baseball from a height of 4 feet with an initial vertical velocity of 20 feet per second. What polynomial models the height of this ball, in feet? –16t2 + t +

Which polynomial represents the difference in the heights of the baseballs t seconds after they are thrown?

Compare your response to the sample response above. Did your response …

Use what you know about addition and subtraction of polynomials to find the missing term represented by the question mark in each equation.(–4x2 + 6x + 3) + (8x + 5 + ?) = 2x2 + 14x + 8? = (–b3 + 3b2 + 8) – (? – 5b2 – 9) = 5b3 + 8b2 + 17? =