Adding and Subtracting Radicals

Question 1

What is the following sum?

Revolt · Accepted Answer

6 StartRoot 5 EndRoot

Question 2

What is the simplified form of the following expression? Assume and

Revolt · Accepted Answer

7 a c (RootIndex 4 StartRoot a b squared EndRoot)

Question 3

What is the simplified form of the following expression? Assume and

Revolt · Accepted Answer

13 (RootIndex 4 StartRoot x EndRoot) minus 10 (RootIndex 4 StartRoot 2 y EndRoot)

Question 4

The formula gives the length of the side, s, of a cube with a surface area, SA. How much longer is the side of a cube with a surface area of 180 square meters than a cube with the surface area of 120 square meters?

Revolt · Accepted Answer

m

Question 5

Wyatt’s eye-level height is 120 ft above sea level, and Shawn’s eye-level height is 270 ft above sea level. How much farther can Shawn see to the horizon? Use the formula , with d being the distance they can see in miles and h being their eye-level height in feet.

Revolt · Accepted Answer

mi

Question 6

Which of the following is a like radical to ?

Revolt · Accepted Answer

y StartRoot 5 EndRoot

Question 7

What is the simplified form of the following expression?

Revolt · Accepted Answer

RootIndex 3 StartRoot 2 x EndRoot minus 6 (RootIndex 3 StartRoot x EndRoot)

Question 8

What is the following sum in simplest form?

Revolt · Accepted Answer

9 StartRoot 2 EndRoot

Question 9

What is the following difference?

Revolt · Accepted Answer

29 StartRoot 5 EndRoot

Question 10

What is the following sum? Assume and

Revolt · Accepted Answer

2 x y StartRoot y EndRoot + 2 x y squared StartRoot x EndRoot

Adding and Subtracting Radicals Answers

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