OpenStax, Intermediate Algebra 2e §8.4 Add, Subtract, and Multiply Radical Expressions · Exercise 79 · Algebra · Radicals & surds

Add, Subtract, and Multiply Radical Expressions · Exercise 79

ⓐ Explain why $(- n)^{2}$ is always non-negative, for $n \geq 0.$
ⓑ Explain why $- (n)^{2}$ is always non-positive, for $n \geq 0.$

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OpenStax, Intermediate Algebra 2e · §8.4 Add, Subtract, and Multiply Radical Expressions · Exercise 79

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