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Mathematics
Paulina Franco
19 June, 03:16
Evaluate 3x2 - 2xy + 4y2 for x=-2 and y=-1.
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Itsy
19 June, 05:34
0
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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Jaslyn Nichols
19 June, 06:35
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3 x 2 - 2 ( - 2 x - 1) + 4 ( - 1 x 2) = - 6
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