Solve equations using nth roots

1
EXAMPLE 4
Solve equations using nth roots
Solve the equation.
Divide each side by 4.
Take fifth root of each side.
Simplify.
2
EXAMPLE 4
Solve equations using nth roots
Take fourth roots of each side.
Add 3 to each side.
Write solutions separately.
Use a calculator.
3
EXAMPLE 5
Use nth roots in problem solving
4
EXAMPLE 5
Use nth roots in problem solving
SOLUTION
Write model for weight.
Substitute 200 for w.
Divide each side by 0.0167.
Take cube root of each side.
Use a calculator.
5
for Examples 4 and 5
GUIDED PRACTICE
Solve the equation. Round the result to two
decimal places when appropriate.
13. x3 64
SOLUTION
SOLUTION
SOLUTION
SOLUTION
SOLUTION
SOLUTION
6
for Examples 4 and 5
GUIDED PRACTICE
a. 275 grams
SOLUTION
25 cm
b. 340 grams
SOLUTION
27 cm
c. 450 grams
SOLUTION
30 cm