Question

Find the product -3y(xy + 2y^2) and find its value for x = 2 and y = 4.

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Answer 1

Answer:

-3×4(2×4+2×4²)

-12(8+32)= -12×40= -480

Answer 2

Answer:

-480

Step-by-step explanation:

Before substituting the value we should simplify the question

-3y(xy+2y²)= -3xy² - 6y³

Now substitute the values

(-3x2x4x4)-(6x4x4x4)

= -96-384

= -96+(-384)

= -480

I hope it was helpful.