Solve equations with squares: both solutions
Take the root of both sides to undo the power.
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Solve n² = 16. Write both solutions, smaller one first, like -3, 3.
Answer: -4, 4
Solve a² = 196. Write both solutions, smaller one first, like -3, 3.
Answer: -14, 14
Solve y² = 81. Write both solutions, smaller one first, like -3, 3.
Answer: -9, 9
Tip: Take the root of both sides to undo the power.
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