Question

Evaluate the following expressiol x^(2)-5y^(2) for x=-2,y=1

Answer 1

To evaluate the expression x^2 - 5y^2 for x = -2 and y = 1, we substitute these values into the expression:

(-2)^2 - 5(1)^2

Simplifying further:

4 - 5(1)

4 - 5

-1

Therefore, x^2 - 5y^2 equals -1 when x = -2 and y = 1.