If x equals 5, what is 2x²? Quickest gets brainliest.

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g

How can you use synthetic substitution to tell whether a given binomial is a factor of a polynomial?