Question

Find the solutions of the following equation. b^2 = 16/121 choose all answers that apply:

a. b= 2/7
b. b= - 2/7
c. b= 4/11
d. b= -4/11
e. none of the above

tysm <3

Answer 1

S O L U T I O N :

b² = -16/121

16 is 4² and 121 is 11²

b² = -4²/11²

b² = -(4/11)²

When exponents are common they are eliminated. Here, 2 is common

b = ±4/11

• Hence, the answer is ±4/11

OPTION c and d IS CORRECT

Answer 2

c. b= 4/11

d. b= -4/11

Explanation:

b^2 = 16/121

Take the square root of each side

sqrt(b^2) =± sqrt(16/121)

b = ±4/11