In Exercises 33–68, add or subtract as indicated. 5/x + 3

Simplify each exponential expression in Exercises 23–64. $(-4/x{)}^3$

Factor the difference of two squares. $64x^2-81$

In Exercises 15–58, find each product. (x+5)²

Simplify each exponential expression in Exercises 23–64. $(-3x^2{y}^5{)}^2$

Add or subtract terms whenever possible. $3\sqrt{8} - \sqrt{32} + 3\sqrt{72} - \sqrt{75}$

Determine whether each statement is true or false. -13 ≤ -2

In Exercises 33–68, add or subtract as indicated. 3x/8 + x/12

In Exercises 39–48, factor the difference of two squares. 36x²−49y²

Simplify each exponential expression in Exercises 23–64. $\left(3x^4\right)\left(2x^7\right)$

Use the quotient rule to simplify the expressions in Exercises 45-46. √(121/4)

Rationalize the denominator.

$\frac{1}{\sqrt7}$

In Exercises 15–58, find each product. (x−3)²

In Exercises 45–54, rationalize the denominator. 2/√10

Determine whether each statement is true or false. -π ≥ - π

Add or subtract terms whenever possible. 7√5 + 13√5

In Exercises 39–48, factor the difference of two squares. 16x⁴−81

Rationalize the denominator.

$\frac{\sqrt{2}}{\sqrt{5}}$

Add or subtract as indicated. 2/5x − (x+1)/4x

In Exercises 15–58, find each product. (4x²−1)²

Evaluate each expression or indicate that the root is not a real number.

$\frac{\sqrt7}{\sqrt3}$

Factor each perfect square trinomial. $x^2+2x+1$

Determine whether each statement in is true or false. 0 ≥ -6

In Exercises 47 - 49, add or subtract terms whenever possible. 4√72 - 2√48

In Exercises 45–54, rationalize the denominator. 13/(3+√11)

In Exercises 15–58, find each product. (9−5x)²

In Exercises 33–68, add or subtract as indicated. $\frac{x + 9}{10x^3} + \frac{11}{15x^2}$

Rationalize the denominator.

$\frac{3}{3+\sqrt7}$

Rationalize the denominator. 30/√5