Answer:
√9 = ±3
Step-by-step explanation:
... Because 3 × 3 = 9 and (-3) × (-3) = 9
However, it is agreed universally that we take the so-called “positive square root”. That is, we accept that the only answer is 3. In contrast, when we have (x^2) =9, where x is a variable, we don't know whether x is positive or negative so we cannot rule out the possibility that x is negative.
Square root means a number that produces a specified quantity when multiplied by itself.
Answer:
± 3
Step-by-step explanation:
[tex]\sqrt{9}[/tex] = ± 3
That is + 3 or - 3
Since 3 × 3 = 9 and - 3 × - 3 = 9
