Question

Find the exact value of the following.

Find - xy , for x = -75.9 and y = 2.6.


- xy =

Answer 1

197.34

Explanation:

In algebraic expressions, sign notation is an important element. Below are some notations that should be engaged;

- × - = +

- × + = -

+ × + = +

- × + = -

As such, to find -xy where x = -75.9 and y = 2.6

-xy = -(-75.9) × 2.6 (since - × - = +)

= 75.9 × 2.6

= 197.34

Answer 2

- x*y =

-(-75.9) * 2.6

- (-197.34)

197.34

Answer: 197.34