Question

Evaluate the expression for x = 4 and y = 5.

6(x^2 - y) - y^2

Answer 1

First plug in the values.4, and 5.
6(4^2 - 5) - 5^2
now use PEMDAS.
Parenthesis first.
6(11) - 5^2
Now exponents
6(11) - 25
Now multiply.
66 - 24
Now add, (you could subtract but in algebra you add a negative.)
66 + -25 = 41.
Using the steps i provided you can complete and problem of this kind.
:) GL. ^_^