Question

If x = 1 and y = -1 , then the value of the expression 6x^2 + 5xy - y^2 is ______​

Answer 1

Answer:

6x^2+5xy-y^2

=6(1)^2+5(1)(-1)-(-1)^2

Step-by-step explanation:

=6-5-1

=0

Answer 2

Answer:

0

Step-by-step explanation:

x = 1 and y = -1

6x^2 + 5xy - y^2

= 6(1)^2 + 5(1)(-1) - (-1)^2

= 6 + (-5) + (-1)

= 6 -5 -1

= 1 -1 = 0