Question

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

Answer 1

3 x 2 - 2 ( - 2 x - 1 ) + 4 ( - 1 x 2 ) = - 6

Answer 2

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