Evaluate 3x2 - 2xy + 4y2 for x=-2 and y=-1.
2 answers:
3 x 2 - 2 ( - 2 x - 1 ) + 4 ( - 1 x 2 ) = - 6
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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