davion2high davion2high 23-04-2024 Mathematics Answered 4) (−17 +9n³ + 3n²) − (4 − 17n³ + 15n²) F) 26n-12n2-21 H) 26n4n2-8 G) 26n³ + 6n² - 21 J) 26n³ - 4n² - 21