Basically, the square root principle says that if x2 equals some number, k, then to find the solutions all we need to do is take the square root of k. The reason for the ± is that an equation involving x2 must have two solutions, so the two solutions are ±√k.
Answers & Comments
Answer:
1.B
Explanation:
Basically, the square root principle says that if x2 equals some number, k, then to find the solutions all we need to do is take the square root of k. The reason for the ± is that an equation involving x2 must have two solutions, so the two solutions are ±√k.
2.B
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