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Big Ideas Math: Modeling Real Life, Grade 8
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Big Ideas Math: Modeling Real Life, Grade 8 View details
1. Finding Square Roots
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Exercise 12 Page 378

Think of a number that when raised to the second power results in 4.

2 and -2

Practice makes perfect
We want to find both square roots of 4. ± sqrt(4)We need to think of a number that when raised to the second power results in 4. This number is 2.
2^2
CalcPow

Calculate power

4 âś“
With this information, we can say that the square roots of 4 are ± 2, which can be also written as 2 and -2. ± sqrt(4) = ± 2
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arrow_right Self-Assessment for Problem Solving p.377
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