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xxMikexx [17]
3 years ago
14

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

Mathematics
2 answers:
s344n2d4d5 [400]3 years ago
8 0
3 x 2 - 2 ( - 2 x - 1 ) + 4 ( - 1 x 2 ) = - 6
Anon25 [30]3 years ago
3 0

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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