Answer:D
Step-by-step explanation:
(3x^3 - 5x^2 + 4x - 9)-(7x^3 - 8x^2 - 5x + 10)
open brackets
3x^3 - 5x^2 + 4x - 9 - 7x^3 + 8x^2 +5x - 10
Collect like terms
3x^3-7x^3-5x^2+8x^2+4x+5x-9-10
-4x^3+3x^2+9x-19
Is the 5 squared?ejskjsjwbsnnsmsnsnsnmsnsnsnsnsjsjjs
28 ft per min = 0.512064 km per hour
3 Metres = 300 Centimetres
300 x 250 = 75000
✨booyah<span>✨</span>
