Question

proof
$\sqrt{144 } = 4$
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Answer 1

Answer:

Step-by-step explanation:2 Answers. While -12 is "a square root" of 144, the square root operation here denotes a function from nonnegative real numbers to nonnegative real numbers. A function can only produce a single result. So the expresion √144 evaluates to the positive root 12.