OpenStax, Elementary Algebra 2e §9.3 Add and Subtract Square Roots · Exercise 9 · Algebra · Radicals & surds

Add and Subtract Square Roots · Exercise 9

Simplify.

$a - 4 a$

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OpenStax, Elementary Algebra 2e · §9.3 Add and Subtract Square Roots · Exercise 9

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Checked against the answer in OpenStax, Elementary Algebra 2e.