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Which of the following could be a solution to...... x^(2\ )=\ 400
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18 votes
Which of the following could be a solution to......


x^(2\ )=\ 400

User Hristo
by
4.2k points

2 Answers

5 votes

Answer:

x = ±20

Step-by-step explanation:

x² = 400

Taking square root on both sides :

  • √x² = √400
  • x = √(20 × 20)
  • x = √20²
  • x = ±20
User Sethobrien
by
4.4k points
8 votes

Answer:

20, -20

Step-by-step explanation:

User Umer Hayat
by
4.9k points
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