Exercise 2 Page 399

We want to evaluate the given expression. 1 - sqrt(8) We need to remember the order of operations. In this case, we will calculate the cube root. Then, we will subtract the terms. To find the cube root of 8. We need to think of a number that, when multiplied by itself three times, results in 8. ?^3= 8 Since 2 raised to the third power is 8, the number we are looking for is 2.

(2)(2)(2)

ProdToPowThreeFac

a* a* a=a^3

2^3

CalcPow

Calculate power

8

This means that the cube root of 8 is 2. 1 - sqrt(8) calculate root ⟶ 1 - 2 Finally, we can subtract the terms. 1 - 2 subtract ⟶ - 1