Select all the expressions that cannot be factored using integral coefficients and integral constants. A. 25x² - 40x + 16
B. 2x² + x + 4
C. 6x² - 2x - 20
D. x² - 2x - 4

Ithink i know it but i want to be sure so can you me out ?

Brent paid for 6 avocados with a $20.00 bill. he received $10.40 in change. construct and solve an equation can be used to find the price , of each avocados

The half-life of a certain material is 0.002 second. approximately how much of a 14-gram sample will be left after 0.004 second? a. 12 grams b. 3.5 grams c. 0.06 gram d. 7 grams