What is the correct evaluation of 3x2 + 4x - 2y2 + 4y + 5, when x is equal to -1 and y is equal to 5?
1 answer:
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9514 1404 393
Answer:
√42 ≈ 6.48074
Step-by-step explanation:
Put the values in place of the corresponding variables and do the arithmetic.
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42 = 2·3·7 is not a perfect square, nor does it have any perfect square factors. Its square root is irrational.