Square Root Functions

Question 1

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

Revolt · Accepted Answer

–5n2 – 8n + 4

Question 2

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

Revolt · Accepted Answer

⇒ 4: 5; 5

Question 3

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

Revolt · Accepted Answer

Part 1: 8; Part 2: 36

Question 4

(5a2 + 4ab – 3b2) – (–5ab + 4b2 + 3a2) = ⇒ 2 a2 + ⇒ 9 ab + ( ⇒ -7 b2)

Revolt · Accepted Answer

⇒ 2: -7; -7

Question 5

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

Revolt · Accepted Answer

–9s2 + 4s – 2

Question 6

Which example illustrates the commutative property of addition for polynomials?

Revolt · Accepted Answer

(2x2 + 5x) + (4x2 – 4x) = (4x2 – 4x) + (2x2 + 5x)

Question 7

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? =

Revolt · Accepted Answer

6x²; Selection 1: 6x²; Selection 2: –6b³

Question 8

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

Revolt · Accepted Answer

–2k3 – 3k2 – 1.3k

Question 9

Which example illustrates the associative property of addition for polynomials?

Revolt · Accepted Answer

[(2x2 + 5x) + (4x2 – 4x)] + 5x3 =(2x2 + 5x) + [(4x2 – 4x) + 5x3]

Question 10

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 +

Revolt · Accepted Answer

Part 1: 20; Part 2: 4

Square Root Functions Answers

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