Question

evaluate 8.6 square - 7.6 square​

Answer 1

Answer:

(8.6)^2 - (7.6)^2

73.96-57.76

=16.2

Answer 2

Given : The given expression is, (8.6)² - (7.6)²

To find : The value of the given expression.

Solution :

We can simply solve this mathematical problem by using the following mathematical process. (our goal is to calculate the value of the given expression)

Here, we will be using algebraic identities, instead of manual calculations. (usage of identities will make the calculations easier)

So,

= (8.6)² - (7.6)²

= (8.6 + 7.6) (8.6 - 7.6)

= 16.2 × 1

= 16.2

(This will be considered as the final result.)

Hence, the value of (8.6)² - (7.6)² is 16.2