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.
Answer:
Q1-298
Q2-422
Step-by-step explanation:
B = 12 - a
Subtract a from both sides to isolate b, and you get the answer.