Question 39 - Math: Calculator Practice Test for the SAT Exam

In simplifying this expression, which of these steps is incorrect?

\(\sqrt{c^2 a+(bc)^2}\) = \(\sqrt{c^2a+b^2 c^2}\) = \(c\sqrt{a+b^2}\) = \(c(\sqrt{a}+\sqrt{b^2})\) = \(c(\sqrt{a}+b)\)

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