Evaluating Expressions

What is the formula for evaluating the square of a binomial?

Evaluate: $$\text{If } y = -4 \text{ and } z = -3, \text{ what is } (y + z)^2?$$

What does the expression 4(p - r) represent?

Evaluate: $$\text{If } p = 6 \text{ and } r = -2, \text{ what is } 4(p - r)?$$

What is the distributive property in algebra?

Evaluate: $$\text{If } b = 4 \text{ and } c = 3, \text{ what is } 4(cb + c)?$$

What does the expression 3(z + x) - x represent?

Evaluate: $$\text{If } x = 2 \text{ and } z = 1, \text{ what is } 3(z + x) - x?$$

What is the formula for evaluating the product of a sum and a difference?

Evaluate: $$\text{If } y = 3 \text{ and } z = 4, \text{ what is } (3/3 + y)(z + z)?$$