Add or subtract terms whenever possible

-3√162 + 2√200 - 9√8

a. -187√2

b. -25√2

c. -3√2

d. 187√2

b.

Step-by-step explanation:

Given:

The expression to simplify is given as:

Let us simplify each term and then add them together.

Now, add all the results obtained above. This gives,

Taking out as it is a common factor, we get

Therefore, the correct option is b.

b. 24 mm

step-by-step explanation:

use the pythagorean theorem.

a^2 + b^2 = c^2

a^2 + 7^2 = 25^2

a^2 + 49 = 625

a^2 = 576

a = 24

answer: b. 24 mm

answer: 177/8

step-by-step explanation: