For the following polynomial expression, perform the indicated operations to simplify.

(23t + 4)(23t - 4)

Rewrite the following expression by factoring it completely:

27d³ + 343

Determine the value of the given expression. 

2 • 6 - 18 ÷ 3

Apply the distributive property to rewrite the given expression and simplify if necessary.

-37(a - b)

For the following algebraic expression, perform the indicated operations to simplify.

23(r + 2) - 17r - 39 + 10