Calculate the surface area of the following triangular prism. 12ft 13ft 13ft 10 fr 15ft.​

B) 660 ft^2

Step-by-step explanation:

13x15x2 + 10x15 + 12x10x0.5x2 = 660 ft^2

584.12493902438 ft2

Step-by-step explanation:

Or around 584ft^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

-4

step-by-step explanation:

do 6-10=

if u need it to be negative.