Which binomial is a factor of x^4 - 4x^2 - 4x + 8
1. x-2
2. x+2
3.x-4
4.x+4

What is the product of the radical expression. (7-2square root) (8+2 square root)

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?