Check all of the possible first steps in factoring a polynomial with four terms. 1.factor out a gcf 2.factor the difference of cubes 3.factor a sum of cubes 4.factor a difference of squares 5.factor a perfect-square trinomial 6.factor by grouping

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?