Expression value

Determine the value of the expression 3a + 2b - a² - 4b² for the values of the variables:
a) a = - 1, b = 3
b) a = 2, b = -1
c) a = -2, b = -3
d) a = 4, b = 2
e) a = -5, b = 0

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You need to know the following knowledge to solve this word math problem:

arithmetic

second power

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