Answer:
-8
Step-by-step explanation:
3x² - 5√(2xy) when x = 2 and y = 4
= 3(2²) - 5√(2×2×4)
= 3(4) - 5√16
= 3(4) - 5(4)
= 12 - 20
= -8
ANSWER
My answer is in the photo above
