Which side lengths form a right triangle? Choose all answers that apply: (Choice A) A 5, \sqrt8, 335, 8 ,335, comma, square root of, 8, end square root, comma, 33 (Choice B, Checked) B 8, 15, 178,15,178, comma, 15, comma, 17 (Choice C) C \sqrt2, \sqrt2, 2 2 , 2 ,2

- 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

part 1 answer = 8

part 2 answer = 72

step-by-step explanation:

part 1 explanation = add all of the numbers, then divide by how many numbers you have. so, 200/25 = 8.

part 2 explanation = not gonna lie, this is hard to explain, so just google how to do it.

{3 + i, 3 - i, 3, -1}

step-by-step explanation: