Question

In simplifying this expression, which of these steps is *incorrect*?   

$$\sqrt{c^2 a+(bc)^2}$$ = $$\sqrt{c^2a+b^2 c^2}$$ = $$c\sqrt{a+b^2}$$ = $$c(\sqrt{a}+\sqrt{b^2})$$ = $$c(\sqrt{a}+b)$$

Accepted Answer

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

Answer

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

Answer

$$\sqrt{c^2a+b^2c^2}$$=$$c\sqrt{a+b^2}$$

Answer

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

Question 64 - Math Practice Test for the SAT Exam

Hint