Question

(Can someone help it’s due tomorrow) x^2 -3xy x= -7 and y=4

Answer 1

x^2 - 3xy = (-7)^2 - 3(-7)(4)

= 49 + 84

= 133

Make sure you remember that (-7)^2 = (-7)(-7) = positive 49

Answer 2

35

Explanation:

Substitute every detail given

(-7)^2 -3(-7)(4)

-49 - (-21) × 4

-49 + 84

35