Chapter 8: Q. 8.4TI (page 745)

Simplify: $(a) - \sqrt{49}$ $(b) \sqrt{- 121}$

Short Answer

Expert verified

The solution of (a) is $- 7$ and (b) is there is no real number.

Step by step solution

Part (a). Step 1. Given information

The root: $- \sqrt{49}$

Part (b) Step 2. Calculation

We have,

$- \sqrt{49} = - 7$

Since, $7^{2} = 49$ and the negative is in front of the radical sign.

Therefore, the solution is $- 7$

Part (b). Step 1, Given information

The root: $\sqrt{- 121}$

Part (b). Step 2. Calculation

We have,

$\sqrt{- 121} = \sqrt{- 121} i s n o t a r e a l n u m b e r$

There is no real number whose square is $\sqrt{- 121}$

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Simplify: $(a) - \sqrt{49}$ $(b) \sqrt{- 121}$

Short Answer

Step by step solution

Part (a). Step 1. Given information

Part (b) Step 2. Calculation

Part (b). Step 1, Given information

Part (b). Step 2. Calculation

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Simplify:(a)-49 (b)-121

Short Answer

Step by step solution

Part (a). Step 1. Given information

Part (b) Step 2. Calculation

Part (b). Step 1, Given information

Part (b). Step 2. Calculation

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Calculus

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Logic and Functions

Study anywhere. Anytime. Across all devices.

Simplify: $(a) - \sqrt{49}$ $(b) \sqrt{- 121}$