91Ó°ÊÓ

Simplify each expression as completely as possible. Be sure your answers are in simplest radical form. Assume that all variables appearing under radical signs are nonnegative. $$\frac{18}{\sqrt{10}}$$

Solve the given equation. $$4 \sqrt{7-8 x}+3=15$$

Perform the indicated operations. Simplify all answers as completely as possible. Assume that all variables appearing under radical signs are nonnegative. $$(\sqrt{x}+2)^{2}-(\sqrt{x+2})^{2}$$

Use a calculator to find the following square roots. Round off your answers to the nearest hundredth. $$\sqrt{73.6}$$

Use a calculator to find the following square roots. Round off your answers to the nearest hundredth. $$\sqrt{58.9}$$

Solve the given equation. $$5 \sqrt{4-18 x}-8=22$$

In each of the following, perform the indicated operations and simplify as completely as possible. Assume all variables appearing under radical signs are non negative. $$\sqrt{18 z}+\sqrt{8 z}$$

Simplify each expression as completely as possible. Be sure your answers are in simplest radical form. Assume that all variables appearing under radical signs are nonnegative. $$\frac{12}{\sqrt{14}}$$

Perform the indicated operations. Simplify all answers as completely as possible. Assume that all variables appearing under radical signs are nonnegative. $$(\sqrt{m-4})^{2}-(\sqrt{m}-4)^{2}$$

Use a calculator to find the following square roots. Round off your answers to the nearest hundredth. $$\sqrt{2.09}$$