Heal22222 Heal22222

17-12-2021
Mathematics

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Evaluate 3x2 - 2xy + 4y2 for x = -1 and y = -2. .

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TalkingCactus TalkingCactus

17-12-2021

Answer:

The answer is 12

Step-by-step explanation:

3x² - 2xy + 4y²

Let x = -2

y = -1

3(-2)² - 2(-2)(-1) + 4(-1)²

= 3(4) - 2(2) + 4(1)

= 12 - 4 + 4

= 12

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