Question

A) Calculate
8.6² - 1.4²
2

Answer 1

6

Explanation:

square root of 8.6² - 1.4²/2

(8.6² =73.96) - (1.4²=1.96)/2

Therefore, √73.96-1.96 /2

√72/2=√36 =6

Answer 2

The answer is 6

8.6^2-1.4^2
2
first times both numbers by themselves
73.96-1.96
2
subtract
72
2
divide
36
then find the sq root
6