What is the movement of plates that forms ocean trenches? a. convergent b. divergent c. subduction

answer: divergent is when the tectonic plates move away from each other.

the areas in the ocean where one earth crust goes under another due to plate tectonics, is called a subduction zone, since it's the location where one crust subducts under the area, creating a large trench in the earth's surface.

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form

dwe

step-by-step explanation:

ewd