In the figure below, G is between E and H. and F is the midpoint of EG. If FG=6 and EH= 17, find GH.

5

Step-by-step explanation:

EH = EG + GH;

17 = EF + FG + GH; EF = FG = 6;

17 = 6 + 6 + GH;

GH = 5

- 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