Correct answer only ! a square root expression is in simplified radical form if the radical contains (check all that apply): a. no fractions b. no radicals in the denominator c. no perfect square factors

Multiply. −2x(6x4−7x2+x−5) express the answer in standard form. enter your answer in the box.

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?