Final answer:
To evaluate the expression x^2-3xy with x=-7 and y=4, we substitute the values of x and y and simplify to get the result 133.
Step-by-step explanation:
To evaluate the expression x^2-3xy with x=-7 and y=4, we substitute the values of x and y and simplify.
Plugging in x=-7 and y=4, we have:
(-7)^2 - 3(-7)(4)
Simplifying further:
49 - (-84)
49 + 84
133
Learn more about Evaluating expressions with given values